Grom Mods - DHM CAM and ECU

[@CTGromer]

FYI: In a recent speedrun after filming this video, I achieved 72MPH speedo indicated - stock gearing with CAM and ECU Reflash Combo!

[@toolshedjunky]

What is your RPM around 60MPH?

[@CTGromer]

@@toolshedjunky Approximately 7900RPM

[@CTGromer]

@Micky Damon hahaha, I wish I got paid to make youtube videos. You want me to send you a speed run tomorrow? Send me your instagram I'll DM you.

[@CTGromer]

@Derek Frampton PaPa-D almost!

[@helenodetroyo7035]

why you dont install the Koso 4 valve cylinder head to the groom? www.amazon.com/dp/B07142Q45T/?coliid=I1GBLDMN8VA48T&colid=3PYD9WH3HP4OF&psc=1

[@kronomikon5355]

After watching many videos of people taking these little bikes on and off road and seeing their toughness and versatility, i'm literally falling in love with the Grom. Great video by the way!

[@CTGromer]

Krono Mikon man I totally agree they’re an awesome bike!! One of the best purchases I’ve ever made! Thanks a lot of the kind words!

[@MrCamoman12]

The reason youre probably experiencing the "lag" at lower end is one because that cam you put in one is made for mid to top end pull which is why that ecm is raised to 10k rpm's (so you can benefit from 6-10k in the rev range) which is basically replacing the low end power for top end in a similar way that gearing does (and some bottom end could be gained back with a gearing change) and two because that decomp was giving rotating mass and a heavier rotating mass helps with bottom end (and could be gained back through the use of a heavier flywheel or clutch basket). As someone who has always wanted a grom but cant because i live in a small town that id have to ride highways (atleast 30 minutes) to get anywhere so i thought that a grom was just a dream and id keep riding big bikes, but this has changed my mind. I also didnt want to bore or stroke a grom because i dont have a case puller to pull a bottom end and i didnt want to lose reliability with a big bore. This seems like a viable option that doesnt kill the bank

[@CTGromer]

I agree with you completely. It makes sense that I'm really feeling the bog, because I removed my oil spinner as well, which contributes a significant amount of rotating mass. It really does pull on the top end now though. Just depends on how you want to set your grom up. I appreciate your informative response!

[@roberthelvick4939]

Would putting a 14tooth sprocket up front help with the low end with the rest of these mods ?

[@peelypeelmeister6432]

Hi mate. My cam and reflashed ecu arrived from the USA. I've had the Chimera air intake for a while but wanted to wait for the cam and ecu. Big thanks CT. Regards from Western Australia 🇦🇺

[@CTGromer]

Congrats! Prepare to go fast!

[@crawlersncustoms]

Dude. Thanks. I am doing this for sure. I’ve got the intake and exhaust and have been on the fence on which ECU. But for 150 bucks cam and ecu that’s a done deal!

[@CTGromer]

Thanks for commenting man, I really think you'll like it. I was really impressed with the boost I got, was not expecting it to be that significant! Let me know what you think!

[@rcdetails2173]

Oh hell yeah! Nice video once again. This is what I'll be doing to my Grom for sure. I thought it sounded great once i moded my air box but this is outrageous! I love my Grom more than any previous bike I've owned. So good around town and a shit ton of fun to work on. Every time I ride it I feel like I'm getting away with something. :) It's got over 15000 kms (9300 miles) on it so it needs some love and this is just the thing. Thanks mate!.

[@CTGromer]

RC Details ahhhhh man I love hearing about guys like you that ride the sh*t out of their groms and just enjoy them to the fullest! We really are getting away with something! Best money I ever spent! Glad the content was helpful! Keep grommin!

[@SuperLEEEDWARDS]

JEEZ THAT GROM FLEW AFTER IT KICKED IN . Standard grooms would NEVER PULL UP THE REVS LIKE THAT. THANKS FOR SHARING BUDDY SCOOBS UK.

[@CTGromer]

Heyyy thanks for commenting! Glad you enjoyed the video, new content coming soon!

[@-JohnSmith-]

V-Tech kicked in yo!

[@joegraham2223]

I just installed my intake combined with Yoshimura exhaust. I've been waiting on my cam and ecu for about a week now! Im excited for it to show up, only one more week. I just put a video up on my channel about the intake. Thanks for the awesome review

[@CTGromer]

Hey thanks for commenting! Just watched the video you put up, it's great man, keep them coming! We need more good content creators! Wait until you install the CAM and reflashed ECU. the difference is crazy!

[@geraintthomas6612]

Great video, I currently own a 2020 Goldwing and a 2019 Super Cub. I’ve really started to enjoy small bikes, thinking of adding a Grom to my garage. The videos are awesome and give me plenty of ideas, keep up the good work 👍

[@CTGromer]

I really appreciate the compliment on the channel, and I'm glad you're enjoying the content! I'll bet the Super Cub is fun, and if you're really liking it, you'll love the grom!

[@crawlersncustoms]

Turns out David from DHM lives a few minutes from me. After watching your vid I ordered the cam and ECU. Then we met up and he flashed my ecu while on the bike and handed me the cam. Installing today and stoked! Thanks for the vid.

[@CTGromer]

DUUUUDE thats awesome! Thanks so much for sharing this, David's customer service sounds outstanding. You're going to love the combo, let me know what you think!

[@crawlersncustoms]

CT Gromer holy-e crap. Just let it warm up and went for a rip. This is by far the best 153 dollars you can spend on a grom. I’m about 180 lbs and 7-rev limiter is now a blast. Already let David know I was really happy.

[@CTGromer]

James Bailey YES!!!! Isn’t it insane?! Enjoy man!! It will continue to get a little better as the ECU learns more. Mine seemed to get better until about 50 miles on the new ECU. So happy that you’re happy bud!

[@wave125thaigarage3]

bigger injector holes+ port n polish+ double (inner with outer)valve spring + 14/36 sprocket ratio. 👌🏼👌🏼

[@CTGromer]

Thats the next stage for sure! Is that what you have done on yours?? Thanks for commenting!

[@ghettobikelife8833]

Do they not already have inner+outer springs? Had a Chinese Honda clone with them

[@trustmedood]

CT Gromer you’re fu*king awesome man! You basically tried all the things I’ve thought about doing to my GROM. I actually have a Yoshi in route to my house as we speak as well as a Short Dinger intake and I am definitely sending my ECU out to DHM now. Thanks for making your videos dood!

[@CTGromer]

Dude you're going to love the results! That's awesome, glad you're finding value in the channel!

[@rmdhndwi]

When you feel the lag at low rpm, that's a bargain with high duration/high lift aftermarket cam, you can cope it a little bit by raising your compression ratio I have a wave110, with high lift & duration cam, it did a little bog at the low end, but at mid & high, it pulls like crazy Camshaft literally shaping the character of your engine

[@CTGromer]

I feel the same way, it more than makes up for the low-end bog with its crazy mid-high range power now! Not to mention the amazing sound now! Thanks for commenting!

[@rmdhndwi]

@@CTGromer do you have any information about the duration of camshaft? Because if it's too large, peak power is beyond your ecu limiter

[@CTGromer]

@@rmdhndwi To be honest I don't. I trust that DH Motoring knows what he's doing. So far, everything is going great. The package he sent me contains an ECU that has been flashed to compensate for the CAM he sent.

[@JeeperLife84]

@@rmdhndwi ECU flash has raised rev limiter

[@MotorcyclistDiaries]

Hi Daniel! Thanks for meticulous approach to testing. Interesting that with adding more RPMs (10000) and power on top end the Top Speed remains the same and even less than without kit.

[@grombomb1363]

I installed Platinum Klx bars yesterday, dingerbuilt mid intake, dh motoring cam and reflash coming next week! 14t/35t sprocket setup it's GONNA BE PEPPY

[@CTGromer]

Gonna be real peppy! Let me know how it all comes out! Thanks for commenting!

[@grombomb1363]

My bad guys I forgot to respond on here, but yes it is noticeablyfaster I have topped out at 77 miles an hour I am 6'2 215lbs, it pulls way harder 1st through 3rd above 7000 RPMs it just opens up

[@CTGromer]

@@grombomb1363 Glad you've had good results! You loving it??

[@grombomb1363]

I sure am. Wish I could post a pic on here

[@grombomb1363]

Update, if you want to see my bike and how it sounds I posted a video of it on my channel just so yall could see

[@1BlackopsGuru]

lol the engine literally hasn't changed in 40 years i just rebuilt a 1980 atc 110 and the engine is literally the same

[@CTGromer]

That's exactly right! My old Trail90 taught me how to work on the Grom platform. They're tried and true outstanding engines! Thanks for commenting!

[@obs.vanness1604]

1BlackopsGuru That’s good. Use grom injection on an Atc. Would be cool

[@CTGromer]

@@obs.vanness1604 would be really cool if you could engine swap one of these into an old Honda ATC or Trail90!

[@theburritodaddy9384]

And now they introduced a CT 125...

[@mistahken15]

you are the only dude to break down and do math on everything exactly how i do it. just found your channel

[@TimmyTints]

Exactly!! Very helpful videos for sure

[@CTGromer]

I'm very happy you found value, thank you for watching and commenting!

[@CTGromer]

@@TimmyTints Thank you for commenting and watching!

[@mistahken15]

@@CTGromer i just blew my super 125 up and im going stunt with a cam and DHM ECU the finbro is the fucking worst! NEVER BUY IT

[@AdventureDaily]

Good stuff man I love the intro! Video quality is👌🏻

[@CTGromer]

I really appreciate it brother, thanks for taking the time!

[@noahkoop6459]

This video gets me excited, I ordered the dhm stage 3 kit for my grom, cam and high compression piston with ecu flash, now I can’t wait for that video you’re planning!

[@CTGromer]

That's awesome man, I'm in the process of breaking in the new piston before I do the speedrun... I can already tell its got more power!

[@noahkoop6459]

CT Gromer dhm include instructions on the break in for the piston?

[@sparkme123]

Thanks for the tips, I'll definitely be going the re-flash route.

[@CTGromer]

Glad you found value, thank you for watching! Relfash is cheapest route to fix your AFR!

[@Anonymouseys]

Waiting for my parts to do exactly this. I'm very excited now.

[@CTGromer]

Sweet, you wont be sorry, the Stage 2 kit is definitely the best bang for your buck!

[@GiancarloFloyd]

Oh wow you break in cams the same way I do!

[@CTGromer]

Grip & Grip! Is there any other way?? Haha!

[@ronaldparker1715]

man yet again with a banger💪🏾🔥🔥

[@CTGromer]

I appreciate it brother!

[@MrMe1280]

That's awesome. I'm planning to buy a grom this weekend and I'm looking for the best way to get 70+mph out of the bike. It's only a few miles on the highway to work but I want to be able to keep up with traffic. Thanks for the video man. You got a new sub' I'll be watching all your content from now on.

[@MASKEDMONKEY18]

good luck getting 70 unless youre going downhill

[@CTGromer]

Thanks so much for subbing and commenting! good luck picking up a grom! You wont regret it. Keeping gearing stock, intake, quality exhaust and Reflash ECU (look into DH Motoring) will get you to 70mph. Adding the CAM will help even more!

[@supermotogreg]

You stated the reason why I don't get a cam. I'm not willing to give up low rpm torque in exchange for high rpm horsepower. For performance guys who want to race around all the time it's the perfect solution. But not so practical for regular daily transportation guys who always ride between 3,500 and 6,000 rpm. For most riders it's a great product and the price is right. : )

[@CTGromer]

That's true you do lose some. But when I'm riding the grom in town I find myself at pegged throttle a lot of the time, so it definitely helps get you up to speed when you need it!

[@supermotogreg]

@@CTGromer My riding style is completely different. I rarely peg the throttle and the engine is almost always between 3,500 and 6,000 rpm. With such a small bike and a tiny engine, weight becomes a major performance factor. I weigh 138 and my Grom is lightened down to 214 pounds. I just ordered a lightweight all aluminum rear swing arm to make it even lighter. Cams are just fine if you need to spool up the engine. That's what they're designed to do.

[@lewdubbin81]

You just saved me the money and the time. Thank you. Subbed - Houston TX

[@CTGromer]

That's what I'm here for--thanks for taking the time to watch and drop a nice comment! Most importantly, thank you so much for subbing!

[@aeror115]

Cool review mate! Ride safe and enjoy the bike life🤙

[@CTGromer]

AeroR Thank you brother, thank you for commenting!

[@molonlabe9602]

Just installed a 57mm bore kit (148cc) for $25, added a 28mm exhaust system ($25) and have a performance cam ($25) and bigger injector ($15) on order. After everything is installed and running smoothly, I'll get an ECU remap done in a parking lot at a local shopping mall by a freelance Honda technician for about $17 bucks. Yes, things are inexpensive where I live...and I own the MSX, not a "Grom". I hope I'll be done with my major MSX projects.

[@CTGromer]

Pics and receipts or it didn't happen! I have a hard time believing those price points

[@trucker2b]

And I love it... Will be dropping a mid range stage 1 cam in my bike...

[@CTGromer]

Good luck!

[@Tctv456]

I just got a new grom today and I got say, you've given me alot of ideas for mine

[@CTGromer]

Hey congrats on the new grom! I'm glad you're enjoying the channel, that is my intent!

[@joegergo7322]

Awesome video! I just picked up a 2024 and have been debating what I want to do to it, this helped so much

[@welcome2myworld1.o89]

Wow! Nice video! Idk why this came up in my recommendation box. But, it was cool.

[@CTGromer]

Well I'm very glad you took the time to watch something you weren't looking for, and enjoyed it! Thank you for commenting!

[@bandy6366]

Subbed. Great grom video. Keep them coming.

[@CTGromer]

Bandy awesome! I appreciate the sub and comment! Thank you, keep watching!

[@scottbapilot5639]

Another Awesome Video Dan!

[@CTGromer]

I appreciate it! I'll keep them coming, the Grom is getting faster and faster!

[@BR-kj3fp]

Insane! 40mph!

[@shannonconlee671]

Just ordered mine can't wait!!

[@mollygrubber]

Great video, and thank you - but the "T" means Top Dead Center, not "time". And, not to be irritating, the "Ch" is pronounced like a "K" in Chimera

[@CTGromer]

Man, you're right, I always get the "T" confused with "timing mark" instead of top dead center, my bad for saying that. aaaand you're not the first to say that about the Ki-mera intake... thank you for commenting!

[@jrstints7945]

Great video man!! Keep up the great work👍👍

[@CTGromer]

JR's Tints I very much appreciate it, thank you for commenting!

[@eastcoastish]

Nice video! Wanted to point out that DHM is just a reseller though - the ECU is flashed by Cameron Jones Racing and the cam is from TBoltUSA.

[@CTGromer]

Well I'm glad he found a niche and is making money! I appreciate the info though, didn't know that.

[@charlesmorris8491]

I don't know about this bike but in every other motor I've worked on "T" stands for "Top" as in "Top Dead Center".

[@CTGromer]

Thats what it means here too, I just said "timing" which is incorrect, thanks for commenting, good catch.

[@oneleggangdev_1leg]

Upgraded clutch springs will help 🤟🏽

[@CTGromer]

I need to do those, a lot of my friends have them, especially the stunters, thanks for commenting!

[@FredChiTown]

great to have exact speed runs, costs of kits, and the ability and time to do it!!!

[@Germ0o]

I'm very interested in the cam package, but I do also like the 186cc kit.....hmmm I can't decide dammit I have too many projects.....thanks for your review.

[@CTGromer]

Why not both?! Can't go wrong either way, if it were me I'd start with the CAM and Reflash. Thanks for watching and commenting!

[@primedirective00]

Pretty sure that weight is a balancer. Did you notice the engine becoming more vibey afterwards?

[@CTGromer]

Hey, no I didn't. Seems the same in that regard, a couple others have commented that its some sort of decompression mechanism to aid in starting, however, it starts just the same as it did before with the new performance CAM. Thanks for commenting!

[@harleymoore3681]

Much love from the Central Valley!! I’m subscribing for sure!!!

[@CTGromer]

Means the world! Thanks for the sub and the comment!

[@CTGromer]

Harley Moore where in Central Valley are you from?

[@harleymoore3681]

CT Gromer I’m in Fresno. I’m actually looking to get my first bike by October. Thinking heavily on getting a Grom.

[@CTGromer]

Harley Moore that’s awesome!!! Well there’s a good size squad of us you can ride with anytime- especially if you get s Grom!

[@harleymoore3681]

CT Gromer hell yea bro! I found you on IG I look forward to it!

[@DoRC]

Comparing the power commander to a package that includes a cam is kind of unfair. A power commander is only as good as the tune that gets put on it. It's really designed to allow for unlimited tuning (like on a dyno) and is very often underutilized. Not saying the flash and cam isn't sweet it's just comparing apples to oranges.

[@CTGromer]

While I agree with you in terms of performance they're not comparable and that the PCV is typically under utilized and people are just using the maps provided on the PCV websites and not using a wideband sensor or dyno, I disagree on their total comparability. I'm comparing what you get for dollar spent and the PCV just by itself is $350, then you have to buy the wideband sensor, or at least dyno it (more money). With the DHM CAM and Reflash package ($150) you get sooo much more performance for your money spent. That's my point. Thanks for commenting brother, cheers!

[@robertmrozek3067]

@@CTGromer If you wanted to make a comparison for the PCV and mods from DHM, you should have just swapped out the reflashed ecu without the cam, or paired the Tbolt cam with the PCV and test against the DHM / cam combo.

[@CTGromer]

@@robertmrozek3067 The problem is I'd have to pay more to get the PCV tuned for the TB CAM, and I didn't want to do that. Again, my comparison is on price of the two packages vs power gained.

[@ichibangrom9735]

Just found your channel. Great video. Going to try this on my Grom. Liked and Subbed

[@CTGromer]

ichibangrom thank you for the kind words brother! Really means a lot, I’m truly glad that you’re finding value in the videos, I will keep them coming!

[@MedicB142]

Was there a cam break in/rev burn in for the new cam? Oil change after said number of miles?

[@CTGromer]

DH Motoring did not say if there was or wasn't, but I just rode it like normal, which is pretty much wide open everywhere. Everything has been good 3,000 miles later! Good question, thanks for commenting.

[@BakedAndAwakePodcast]

Brother BTW KZbin is screwing with you a little bit- I got hit with a dialog box as soon as I clicked on this video saying "Tell us what your biggest problem with this channel is" (!!) and had a list of answers below like misleading this or spam that etc. Up top was some header saying "clickbait channels", or something close to that. I wish I had snapped a pic. Anyway if you're monetized, keep it in mind and consider what you can do to be proactive and avoid getting hosed by the YT Police. Stoked to hear what's up with the cam and ECU upgrades though so I'm shutting up now.

[@CTGromer]

Good lookin out brother, I have not idea what that's about! I'm going to look into it though. No, I'm not monetizing at this point, maybe in the future, so I wonder why you were shown these options? I wonder how many others have seen it?? Click bait channel? Thats a little insulting YT!

[@joshbaker5459]

Is it still easy to pop and ride wheelies with these mods? I had dhm flash my ecm and got some good results.

[@CTGromer]

Hey thanks for commenting! Yes, wheelies are still very attainable.

[@amonGustavo07]

You can do sit downs in third lmao

[@absyt11]

T for time? Thought it was Top dead centre 😂

[@CTGromer]

It is! I get a little silly sometimes when I'm recording! Good catch!

[@asdf52708]

what is the F for? mine has a T and an F mark

[@spencerdenniston2517]

aaron estrada it’s a firing mark. It’s when the spark plug actually fires

[@twowheelhoundog4404]

Do you need the cam with the reflashed ecu?? What kind of handle bars do you have?? Your videos are awesome!! Keep up the good work!!

[@CTGromer]

Thanks for commenting! YES! I should've clarified this in the video better, ECU-Reflash is mandatory with the new CAM, my bars are KLX110 ProTaper SE Bars, with a red EBay "Honda" pad cover. I appreciate all the kind words, I'll keep producing content!

[@DHMotoring]

We can reflash the ecu for intake and exhaust only if you don’t have a cam

[@twowheelhoundog4404]

@@DHMotoring How much does that cost??

[@DHMotoring]

Franks N Beanz $105 includes return shipping of your ecu to you

[@Tac.Outdoors]

Thanks for video I just finished intake and want to get a yoshi pipe next! I prolly won’t change the cam. Do I still need reflash? Your videos are having me lean more towards the re-flash.

[@CTGromer]

Definitely a re-flash is needed, the cheapest one by far is DHmotoring, hit him up and he'll send you one. This insures you're not running to lean with the addition of intake and exhaust. So glad you're finding value, thanks for watching!

[@Tac.Outdoors]

CT Gromer your videos are great! Keep up the good work! You should keep making how to videos the quality of your content is so good! How to change oil lol I’m almost at 600 miles

[@CTGromer]

@@Tac.Outdoors I've thought about doing that! I may just have to do a little content creation "how to" on common grom maintenance! I appreciate the advice, and the kind words!

[@Tac.Outdoors]

CT Gromer i recommend it you have great content !

[@justintyme3043]

Superb video, subscribed! Hows the bike and new cam doing? Im wanting to pull the trigger already but wondering about reliability. 10k redline for reals? Question: have you tried the kitaco clutch cover which removes the oil spinner?

[@CTGromer]

Hey, thanks for watching and commenting! The bike runs perfect with the CAM and ECU reflash still almost 2,500 miles later. The reliability is there man, just keep fresh oil in it and check your valves here and there, yes, DHMotoring sets the ECU to rev to 10,500 rpm, when you bang limiter it sounds amazing! Yes, I do have the Kitaco Clutch cover installed, I love it. Makes the engine rev to limiter faster for sure due to less rotating mass. It also makes you feel better to know that your oil is going through an actual oil filter too.

[@xxraverbrosxxraver5107]

Keep pushing fire videos broda, love the content

[@CTGromer]

xXRAVERBROSXx Raver comments like this mean a lot, thank you! I’ll keep producing!

[@ianmacarthur1144]

very informative, interesting and entertaining video! beginner question though - do you think each of your mods (exhaust, intake, ECU/CAM) and respective name brands would work on pretty much any 125cc bike/scooter? thx...

[@CTGromer]

I'm not sure, I can only speak to the groms, but you can check each of the manufactures and see what specific models they make these parts for. If you're asking will all these exact grom aftermarket parts bolt right up to any 125cc bike? No, they won't. They're not universal parts.

[@pow_hnd]

Did you notice any changes to the MPG? Just wondering if going this route will make a significant decrease in MPG. As much as I want a bit more performance, I love the MPG, as I use mine as my daily commuter pretty much May-October. The MPG was a big factor for me in getting a Grom.

[@CTGromer]

I'm pinned a lot of the time, and I seem to get just 100MPG on the button. So, not a significant amount of decrease in mileage.

[@pow_hnd]

@@CTGromer thanks for the response!

[@SkoshCreation]

Hi Daniel, thanks for the video, I have the same combo on order now. Wanted to ask, is it necessary to pull the rocker arm pins out or can the rocker arm adjustments just be backed out to get the cam out and new one back in? Keep up the good work!

[@BiggOlSkunk]

Just FYI you didn't mark on the cam chain where TDC was, you also didn't put the TB adjusters on your rocker arms as the stock ones are not long enough.

[@CTGromer]

True, I didn't do either of those, but everything is working fine 3,000 miles later!

[@welcome2myworld1.o89]

All I really want is just the RPMs to be down to six grand or so at Highway cruising speed of 65 mph.

[@CTGromer]

Unfortunately I think you need a bigger engine then, or a bigger bike! Remember in stock condition she's only got 8 HP! I'd say sprocket up in the front and drop some teeth in the rear, but the grom doesnt have the power or torque pull the taller gearing effectively in fourth if you do that.

[@welcome2myworld1.o89]

@@CTGromer thankfully I only weigh 145 lb. It already has a exhaust and I'm trying to install bazzaz tuner! Which is being a real pain in the ass. The seller said they had a power commander The next day they had given me that tuner and it's awful. Power Commander is a simple plugin and play where this is not. Anyways if I must do upgrades. I will. Until then I bought a 16 tooth front sprocket and a 31 tooth rear sprocket. And we'll go from there.

[@gromventuretime89]

Does it affect ability to wheelie with the lower end cut down

[@CTGromer]

No, not significantly. Especially if you're giving it a good rev and popping the clutch, thanks for commenting!

[@jkreviea]

You guys are missing the point of the PCV. It affords you the ability to make changes to the bike, and only pay for the ecu once. If you are content with just the stuff you've done, then by all means, reflash your ecu. But it's like a drug, once you start, you're hooked. The power commander (at least on my last two liter bikes) also had expandability for a/f and other stuff.

[@CTGromer]

You're right, and I try to make that point clear in some of my other videos. If you are going to CONTINUE to mod your bike, BBK, etc. then the PCV has the expand-ability and the customization potential to make it the better choice. For most people on here that are just doing bolt ons and staying stock bore, the ECU flash is the cheapest and safest option. Thanks for the comment!

[@mcvaluemenu]

MO POWA BABY

[@CTGromer]

UNNNNNLIMIITTEEEDDD POOOOOOOOOWWAAAAAAAAAAAAAAAAAAAAAAA

[@BiagioBaller]

Could you potentially compensate for the loss in low-end performance with a different sized sprocket? Love the video!

[@CTGromer]

You definitely can, and in later videos you'll see that I installed a 14T sprocket and it helped significantly!

[@ameenwahal]

add this two mods 150cc injector , Intake and your top speed will go up to 75-80mph

[@liambignell1772]

AMEEN WAHAL will that work on the sf

[@ameenwahal]

Yes , but just make sure to get ecu for sf , so you don’t have to change some wires

[@ameenwahal]

Liam Bignell go check my friend video kzbin.info/www/bejne/a2e7cp2wrNRskKs

[@CTGromer]

for sure it will! I need to do the bigger injector next, thanks for the advice!

[@EffectsExe]

I have a 2019 grom with Vance and Hines exhaust that’s it will a power commander tune with rev extender make it faster.???

[@CTGromer]

it might help some, but its not worth the money. Its cheaper to also add the full intake and just reflash the ECU. But it also depends, are you going to continue to mod all the way up to BBK? If so, the PCV is better because you can constantly retune it yourself with wideband.

[@MotoDad_MX42]

Just curious what you do if a car pulls out in front of you while you're doing 70mph???

[@CTGromer]

Since I'm looking way down the road and not only watching what's happening right in front of me, I'm always planning for that scenario. Always good to think like that though!

[@MattHumms]

Okay so here’s my question. Would there be a speed difference if you ran the K&N intake instead of the Chimera intake?

[@CTGromer]

Hey thanks for commenting! as far as I know, K&N only makes a replacement filter for the stock airbox on the grom, not an intake system like the Chimera. I think for the money Chimera is a great system, but DHM has a really good one too for even cheaper. ANYTHING is better than the stock airbox, its super restrictive.

[@SKITTLELA]

@@CTGromer Yeah, I'm curious about the intake differences. I asked DHM what intake I should get, and they said Chimera is good--even though they sell their own!

[@peteeastmond7620]

Hii there. Good video am getting my first grom. Im from Barbados I think I saw one Honda grom here which was very nice to see. I fall in love with the Honda grom first time I saw the bike. Am looking to put a 143 big bot kit. Question for you is it better to get the (ecu) reflash to get the performance you got with ur Honda grom.?

[@charlesgarcia4928]

Two questions A how many miles on it now and how’s it running? B did you have to do anything else after the cam and ecu? Or can I just order and install the cam and ecu and leave it alone,

[@CTGromer]

Now have over 5,000 miles on the clock with zero issues. I would suggest just doing the CAM and ECU install if you already have intake and exhaust. That gain alone was enough.

[@tomkruger3496]

A few months ago I bought a 2015 Grom with Chimera intake, DHM flashed ECU, and I’m using a basic Amazon aftermarket exhaust. I can only get about 55 mph max. Where do you think I should focus my troubleshooting?

[@CTGromer]

Hmm... how many miles, and how much do you weigh if you don't mind me asking? ALSO - the Yoshimuras make ALOT more power than the cheap aftermarket systems; a lot of R&D went into producing them, which is why they cost so much.

[@johnmclean4911]

When he fits the new cam the cam tap it's super lose. Meaning there is a bigger gap between the tap it and cam lub. Now I would say the valves are not opening and closing for so long now. Meaning your not getting so much petrol or exhaust gas in or out. I just if it would have be a whole lot better if he had just fitted the new reflashed ecu. Please do leave any comments on this. Just wondering what you guys think 🤔

[@CTGromer]

That's an interesting way to look at it, thought I'm not sure if its right or not. I think its more about optimized timing when the engine is spinning really fast. I can tell you theres a guy in our group with the exact same mod set as me except I have the CAM and he doesn't and my grom is significantly faster. Definitely a good point and food for thought though. Thanks for commenting!

[@khanhlam308]

Hi Daniel thanks for the video it’s very informative. I’m brand new to this Grom thing with a 2022 model. I have a Vance & Hines exhaust coming also with an air box from TST. I wanted to know if the Cam and ECU reflash can work for me like yours? Much love stay safe.

[@raulg8390]

nice tip regarding the gas pump

[@CTGromer]

Thanks buddy, heard another guy say it once, made sense to me! Thanks for commenting!

[@WideFive]

Thanks so much, man!

[@CTGromer]

Hey thank YOU for watching and commenting!

[@alexanderrotar4797]

Did the cam and ecu limit wheelie potential? You were talking about how the grom revved higher but how was the bottom end affected?

[@CTGromer]

This is a very good question. Did the CAM and ECU affect wheelie potential? It's hard to tell, but I'm gonna say, yes, slightly. If you're clutching up, I'd say not as much but if you're throttling and bouncing, yes I'd say you lose a little. One thing is for sure- the bike hesitates a little more down in the low RPM range, and the grom needs that "grunt" down low, and pretty much everything its got to get the front end up. ESPECIALLY on sit-downs. Stand-ups are much easier. What really affects the wheelies in a negative way in my opinion is removing the oil spinner. Removing that rotating mass in the engine is also removing the engines inertia, or its ability to keep some momentum through resistance. It revs faster, but you dont seem to get as much "pop" when you drop the clutch and yank. Great question, It's not talked about alot. Thanks for commenting!

[@alexanderrotar4797]

@@CTGromer Thanks man, appreciate the reply. I've been doing a lot of research into different bikes and this helps a lot!

[@chrisnwendy]

Great video! What valve clearance did you go with?

[@CTGromer]

Set them both to 0.004 Inches, thanks for commenting!

[@flyinbryan125]

Don't forget to tighten the cam tensioner!

[@CTGromer]

Check! Guess I just didn't picture it! good call!

[@flyinbryan125]

@@CTGromer was sure you did. Just didn't want others to forget. Great video! Thanks!

[@l.b.8805]

Awesome video,I just bought a 2018 grom with 58 miles,how soon do you think before adding cam and ecu?

[@CTGromer]

I'd get her past 1,000-1,500 miles so that all the tolerances loosen up a bit and the engine wears in... but its your bike, do it when you want!

[@hypeknocksville]

You need a wide ban tuner with the power commander.

[@CTGromer]

I agree, but its SOOO much more money than just reflashing the ECU for the mods you have. That being said, if you have the money, nothing beats the wide ban sensor. My channel tends to speak more to budget, than top of the line though. Thanks for commenting!

[@GoonRides]

I’ve got the Stage 1 Flash from David, debating on if I should get his cam package... I need torque for wheelies, so idk haah

[@CTGromer]

Its good to consider. If you're a stunter the CAM won't help you, in fact it removes some power down low. For your needs I might just do the flash.

[@GoonRides]

CT Gromer alright I think ima leave it alone then haha... David Hooked it up with a flash a while ago, so I’m chillin! He’s the homie haha

[@GoonRides]

CT Gromer thanks for the tips tho

[@glocknut9763]

Great video bro!!

[@CTGromer]

Thank you so much, I appreciate the compliment and comment!

[@Aprilia_RS660]

You have a big bore kit in that grom? Or is that just the oil cooler?

[@CTGromer]

Thanks for commenting, stock bore, just the Kitaco clutch cover and oil cooler. I may do a BBK in the future though, who knows!

[@bandy6366]

@@CTGromer I know! You will. You are all ready in the right way. Greetings from Greece 🇬🇷.

[@stoddern]

next time put the sprocket bolt back into the cam so you can pull on that instead, the weight thing on the cam is a form of variable valve timing

[@CTGromer]

Really? I thought it was some sort of decompression for starting. Putting the bolt back on the CAM is a good idea, thanks!

[@rmdhndwi]

NO ! That's not a variable valve timing ! That's a decompression mechanism, many small bikes use it

[@uspnightfire115]

Can you post a video or recommend one on how you did the valve adjustment? The only thing you didn't show! Any comments about the reliability since install and how many miles you've run it for? Good increases, but not if it's going to do a ton of damage to the motor in the end :/

[@CTGromer]

for valve adjustment, go here: kzbin.info/www/bejne/sJOxn5p8dtpmgJo and go to 8:26. I've has zero reliability issues and currently have 2,700 miles on it since the CAM install. Still runs great!

[@uspnightfire115]

CT Gromer thanks!!

[@Grainsauce]

Any Fixes with the low end lag, any problems that have popped up? Also how is the tune good for different climates and elevations, I feel like the tune would need to be adjusted depending on where you live?

[@CTGromer]

The only fix for the low end lag would be a CAM designed for low-end. I've sacrificed the low end for more topend. I believe since its still the ECU that is tuned, it still compensates for elevation and climate, that would be a good question for DHMotoring - he did my tune.

[@Grainsauce]

@@CTGromer That's great so I wonder why the adding the power commander didn't seem to change anything in terms of performance, would you even bother with it and just get the DHM reflash instead? Also you've got yourself another SUB!

[@morgado99]

another great video.. I am undecided if I choose the power commander or the ECU flash. How is the bike in low and mid rpm? I usually ride with a passenger and I look for the best solution to have a good ride. speed is not my biggest concern. in which he noticed that the bike got stronger in all rpm

[@CTGromer]

Thanks for watching and commenting! I'd recommend just the basic ECU reflash from DH Motoring if you need balanced and linear power. The reflash is only $105 vs the PCV which is $350. The PCV is great if you're going to do a big bore kit and other extreme engine mods. For stock bore and just adding a free flowing exhaust and air intake, the Re-flash is the cheapest and best option!

[@morgado99]

CT Gromer I had already considered going to the ECU reflash but I have some fear as I am from Portugal the result was not so good

[@MikeJones-qo7vt]

@@CTGromer i already brought the 143cc big bore kit and im going to buy the two parts you jus recommended do you think it will work well together? Or jus dont use the big bore kit?

[@CTGromer]

@@morgado99 How so?

[@CTGromer]

@@MikeJones-qo7vt I think the three of those things would be insane, talk to DH motoring though, and make sure when he does the reflash he knows you have a BBK too! Your grom is gonna be a monster!

[@joshuanawrocki2994]

I would've put a dab of paint on the TDC portion of the chain so you aren't off a tooth.

[@CTGromer]

Never thought of that, thanks for the good advice!

[@bromleysmakeityourselfrc2853]

Has anyone swapped in the motor from a cbr 125r? They look really close and if ya check the spec they make 13.8 h.p @ 11000 rpm 🤙🤙

[@CTGromer]

Bromley’s Make it Yourself RC hey thanks for commenting, I don’t know anyone that has personally done it, I’m going to look that up!

[@russellhoude5744]

I'm waiting for a swap from a ZX-25R into a Grom

[@brendarunkle8796]

I'm looking at putting the vance and hines exhaust on do you think i need to get new ecu like what you got and will it increase speed?

[@CTGromer]

Hi Brenda, that's an outstanding exhaust on the grom. If you have stock intake, I wouldn't worry about it. However, if you're going to modify intake or purchase a Chimera or equivalent, I'd recommend ECU reflash. I only noticed a difference in power once I did the intake AND exhaust. With just exhaust the bike felt a little more peppy, but the big difference was with both done. Hope this helps, thanks for commenting :)

[@husainizamzury2496]

change to adjustable timing gear then dial camshaft please & show us the differrences before & after camshaft dial.

[@CTGromer]

I've never done that and am unfamiliar with that procedure. I would need to do some research!

[@DamsG]

Hi from Belgium ! Love your vids. I just purchased a Grom 2017 (MSX 125 in Europe). I wonder one thing. Here, we got some differences about gas. We have the choice between 95 and 98 octane (and sometimes 10% ethanol in it). Do you think the new ecu will accept that ?

[@CTGromer]

its all about compression ratio in the engine. Grom compression is pretty low in stock form, so it can safely run USA 87 octane fuel with up to 10% ethanol. 95 octane is more than enough. Just remember with ethanol in the fuel don't let fuel sit in the bike for too long. It goes bad quicky.

[@jorgeortega1709]

Do you need an oil cooler with this cam? Saw you had one.

[@CTGromer]

You don't need it just for the CAM and ECU package, I like having it though--extra safe. Probably a little overkill for just an exhaust, intake, CAM and ECU though. Thanks for commenting!

[@huntersoyffer3359]

Would the Toce T-Slash exhaust from the TST kit be considered an exhaust that would work with this setup?

[@CTGromer]

Hunter Soyffer absolutely. Anything other than stock- which is less than an inch header pipe, a catalytic converter, and a dense muffler. If it’s a full aftermarket system it’s way better and would work with this system for sure! Thanks for commenting!

[@Scalpcollector]

Do you have any idea about the cam with a -1 front sprocket? Do you know if there would be issues?

[@CTGromer]

Benjamin Ruhlin hey thanks for watching and commenting! No problems except even more acceleration than stock gearing! I’ve been debating dropping 1 tooth in the front!

[@carloscabral8644]

I just bought a chimera intake and new exhaust for my 2018 honda grom what else would you suggest and where can i buy an ecu for my bike for a good price since i am not rich

[@CTGromer]

I am also not rich bro, I feel that. What exhaust did you get? Either way I'd recommend you reflashing your ECU. DHM is a solid choice, as is CJR. I haven't personally used CJR, but have used and interacted multiple times with DHM so he gets the nod in my mind but its your choice. DHM is $45 cheaper for a basic stage 1 reflash which is what you need.

[@henriwolbrink]

You forgot to (mention) to tension timing chain. Oops. Anyway nice video to look at and learn about my recently acquired MSX125sf. Anyway I will probably never notice the difference between stock and a similar upgrade. As I will probably have all parts on my doorstep before passing the break in period.....

[@CTGromer]

Yes, I think I did! Thanks for bring that up! you definitely should tighten it back up when you're done with everything. I did, for some reason just didn't video it--good catch, thanks!

[@henriwolbrink]

@@CTGromer You're welcome. I suggest it should be an easy edit with just some text comment in the video. Would not like to see anyone, overlooking and just eager to start the bike!

[@henriwolbrink]

Surprising that none of the 68+k viewers has mentioned this.

[@henriwolbrink]

Anyway I have a CAM on the way. But will not make this mistake. And ty a zip tie to the chain before removing the sprocket. I also ordered a Bluetooth programmable ECU from Japan. Showing me all data on the fly, and includes map changes, bike locking and map modifying on the fly. Apart from real time data. And all on my mobile. With some luck I could pass emissions tests in the future just installing original exhaust, a flow restrictor (just a small temporary small disk in air intake) and a toggle in the app. Just have a look at the APIECM app in PlayStore. Couldn't find any information as it is probably not available in our alphabet. Like to hear your reaction after checking app. For now it is mainly studying on how to fine tune a good mapping. What would your best suggestion be where to start? I do have a broad technical background but am a newbie on fine tuning ECU maps.

[@CTGromer]

@@henriwolbrink they may be skipping through install to see the review/performance.

[@joebrandau44]

I’m about to instal my new one tomorrow, you say it’s slower coming out of first, do you run 14t front sprocket and 37t back?

[@CTGromer]

At the time of making the video I was running stock gearing, but have since dropped a tooth in the front which helped with the low-end bog. But yes, it's not that it's slower coming out of first, but its a little hesitant at low RPM. But that all changes when you pass 7,000rpm! Good luck- curious to know how you like it!

[@joebrandau44]

CT Gromer bruh love it changed the bike completely.. I have the same upgrades on my Harley but the Grom has so much back pressure it’s crazy lol it’s loader coming down in RPMs than it is going up

[@charlespeters4835]

I was under the impression that once you did the DHM ECU that the bike is now supposed to run 87 octane gasoline? Why would you put 91 in your bike if that is how what it is mapped for?

[@CTGromer]

I don't think it matters much on a stock low compression piston; just a personal preference thing. Tank is only 1 gallon so the difference is $0.20 maybe? That's all :) thanks for commenting!

[@charlespeters4835]

@@CTGromer no disrespect. But I do think that it matters. Not so much about the extra cost per gallon but the fact that David (owner of DHM) modified the ecu to now run on 87... www.dhmotoring.com/product/stage1reflash (6 and 7th paragraph) I personally think that if you are going to pay for a reflash, especially from David that it should run on the gas that he specifies. Like my I said, my opinion. Great channel! Thanks for the content and ride safe!

[@boopygoopy6513]

Is this worth it if you plan to go big bore? Or shell out the extra $200 and get the power 5?

[@CTGromer]

BBK I'd honestly go PC5 with the wideband 02 bung. But this is by far the way to go if you're staying stock bore. Thanks for commenting bud!