ECU Reflash vs. Power Commander For Engine Tuning | The Shop Manual

ECU Reflash vs. Power Commander For Engine Tuning | The Shop Manual
DynoJet Power Commander V:
rvz.la/3qGeC94
FlashTune:
rvz.la/3k7518H
YZF-R6 accessories:
rvz.la/2ZvW4vY
When it comes to tuning a modern fuel-injected motorcycle, you’ve got two choices: You can install a piggyback module, like a Power Commander, or get the ECU flashed by a company like FlashTune. In this episode of The Shop Manual, Ari explains the tech and discusses the pros and cons of each option.

[@RevZilla]

Read more about motorcycles at RevZilla's Common Tread: rvz.la/3aB8CsA

[@kostaskonstantinou640]

What gives you more hp powercomander or reflash the stock one??

[@lucashunter6694]

??? Who are they lol 😂 no one important

[@Panzerlang]

@@dr.jekyll2017 Codswallop. They "spent millions" doing the best they can to get around the emissions regs and end up with garbage fuelling, particularly at low revs. That's why modern bikes are jerky around town. Etc.

[@Panzerlang]

@Dr. Jekyll Most "idiots" find the worst effect of garbage oem fuelling in the first 10%. Catch up dude. Lol.

[@Panzerlang]

@@dr.jekyll2017 What's the "2 miles an hour faster" about? It's not about that. But then "sounds like your bike is a pos". Lol. Ok, you have issues apparently.

[@tahoeboy8658]

I've seen a hell of a lot of bikes with those power commanders and they almost all run super lean. They can be ALL OVER THE PLACE. My advise, get it flashed by a reputable shop and make sure its an unlocked tune so you don't have to go back to them if they mess it up. I got mine done at Moore Mafia and they did a great job.

[@mattsloop2736]

I've seen bikes with them too. They don't seem to run or be any faster then a stock bike. Big waste of money to me.

[@remsangachhakchhuak1738]

I love Moore Mafia !!

[@AP-wu1rv]

That shop sounds familiar is that in Florida?

[@luckycharmssssss]

@@AP-wu1rv No Moore Mafia is in Taylors, South Carolina. Just watch his KZbin channel he shows a lot of videos on dynotuning a whole range of different bikes. Got my bikes ECU flashed by him and made a world of difference compared to no tune. Runs so much better and smoother and seems to be faster. You basically get a dyno tune for the price of a flashtune. Definitely recommend tuning with moore mafia if you plan on getting your bike tuned

[@crisnmaryfam7344]

+1 for Chris Moore.

[@TheGardenSnake]

I’ve installed a number of power commanders and one flash tune kit. The flash tune is way less work to install but a bit more technical with the software. But I love the flash tune. The amount of control is amazing.

[@AriH211]

Yeah it's pretty remarkable what they can do with the software.

[@xenogears5177]

I'm gonna turn a wrench.....This makes me a CUSTOMIZEERRRR!!

[@1up_doug]

guys at velox helped me out with the full harness and qs kit w/ the auto tune after you made that video and im in love. much less work than the PC and alot more options. not to mention you can import PC fuel maps right to the software

[@ChaseN194]

Be very careful on the bike you use it with. They have bricked COUNTLESS sc77 honda ecu's and COUNTLESS kawasaki ecu's. Best performance comes from local shops unless you are just looking to correct some afr's

[@1up_doug]

@joe joe theres more than enough videos out there already showing everything the FT has to offer within the software as well as install videos on the bike its self. Its how i made the decision in the first place lol

[@SachaBernasconi]

Good video! One thing that was not properly mentioned is how easy it is to revert to stock with a power commander. You mentioned removing it which works but is not even needed. With a power commander all you need is to connect your laptop or even smartphone to your bike and change to any map (even stock) you want. You can even have 2 maps on it and add an external switch to change between them.

[@roberthaines2394]

Slick new set and overall production. Looking forward to many more episodes

[@JMartinsATV]

Are you Haines of Haines Manuals fame? If so, your comment makes this episode Oscar-worthy.

[@batshitcrazymotorcycles7044]

Did you want to make a comment about booster plug? An ECU trick that makes the ECU think it's 20 degrees C colder than it is, subsequently putting more fuel into the motor?

[@AriH211]

Thanks! I'm really pleased with the new set.

[@jamaenhallford4241]

@@batshitcrazymotorcycles7044 cxee

[@CubanRider]

Glasses vs Lasik is the best analogy I've heard yet. Great video Ari.

[@derrick.l1870]

Yeah, that concept really opened my eyes 😁

[@Butters_Stunts]

My favorite part of the ftecu kit on my FZ07 was lowering the fan temps. On slow rides on a hot day in a pack of running bikes, it helps keep the temps way down

[@letscheckitout1985]

Was it hard to tune it you’re self?

[@N0kJAA]

My thoughts exactly among others 😊

[@silentfox8]

so glad this dude is still making videos, i was an avid fan of mc garage

[@dawidos117]

Agree! Me too 👍🏻

[@williamarden5441]

If you fart in california you broke emission laws 😂

[@unclejj509]

But for some reason it's legal to take a shit on the sidewalk!!! WTF? HAHA!

[@mowtown75]

Not if it’s done under a sheet and u rebreath it back in, as that’s basically what all these engines are doing.

[@Luka-wk3jv]

You never been in europe😂😂🎉🎉

[@MichaelCoolGuy86]

2:46 that's honestly the best way I've heard these two types of ecu tunes explained. Great job.

[@AriH211]

I'm glad it resonated with you!

[@UncleVom]

You do a great job explaining things without the bs and excessive product placements. Myself I have a fair bit of experience, but just manage to confuse most people. Thank you for a direction to point people in for reliable easy to grasp information. Again. (-; Revzilla's stuff just keeps getting better.

[@Strip4Dreezy]

ive watched a handfull of someone explaining whats the point of dyno tunes, ecu, and power commanders. adn thsi is the first one where I feel like I actually got to understand what was being talked about. the analogoly about glasses vs. lasik was gold

[@MrEmanuelFerreira]

Nice to see you again Ari. "Get Busy Living."

[@andrewshaw1843]

Hi guys. I had a k7 gsxr. Around 6 months after buying the bike was invited back to the garage in London where I had purchased my bike to meet the chef engineers about bike set up and help with R and D. Not sure if ECU's across the pond are different? But hear in the UK power commander's don't make a massive difference. In fact on this particular model the euc is already set up for this particular model. Was told by chief engineer from Japan not to waist money on a PC. As they are generally a con. Saying this did fit a power commander 4 to my honda sp1 which helped' smoother throttle control at lower revs. After re map a whopping 5hp. Goes to show a waist of £250 for 5hp. Smooth throttle control worth it. Like I say I know you're bikes are set up different and your cars because your emmission requirements are lower than ours.

[@zato6226]

A comparison on benefits between the two would've been a huge help.

[@angelcelis9090]

Power commander is the way to go especially if you want a quick shifter those will require power commanders.

[@Hondmad]

@@angelcelis9090 no they don’t you can easily get a standalone quick shifter

[@19910313]

⁠@@angelcelis9090nope. Quickshifters can be used and installed on its own without power commanders.

[@SoloMCRider]

Feel much better now, this video came out just in time!! I just mailed out my ECU for a flash, it’s middle of winter so I got all the time in the world lol Thank you Ari for the video!!

[@ChrisRon1k]

Where did u send urs too?

[@SoloMCRider]

@@ChrisRon1k 2wheeldyno

[@ChrisRon1k]

@@SoloMCRider Thanks bro 💯

[@Mr.ZiggedWhenHeShouldaZagged]

What I'd like to see from Ari would be to take all the bikes Zac uses for Daily Rider on a ride through some faster twisty mountain highways comparing them more as a fun bike, separate from their daily use. To top that off, take them to a track and do a dozen hot laps and put them on a list for best lap, showing the fastest lap as a video ending.

[@MRR-qv3bw]

Cool vid man. There is alot of new riders that this will help because when I started alot of people were stingy with info which meant I cost myself some money and heartache but I eventually got it all lined out.

[@daveyt4802]

PC5 doesn't do much. The O2 sensor in the stock system (closed loop) nullifies most of your fueling changes. Woolich Racing flash seems to best way to go, but it's close to $500 bucks. Send it to Moore Mafia.

[@AdventureSeeker303]

I am surprised that you didn't talk about TuneECU. You download (and can adjust) tunes, and the app (on your phone even), can perform diagnostics, calibrate the speedo, help sync throttle bodies, etx

[@simonmears1726]

I had ECU flash on 1250 bandit bit of backfire from slip-on and air filter box mod cleaned it up nice and responsive down low pulls hard but still smooth and responsive very happy

[@bernhtp]

The optimal approach also depends upon the capabilities/design of the ECU. For example, the advanced ECU of the 2020+ BMW S1000RR/XR/R supports fully closed-loop operation and tuning (continuously takes readings from the exhaust sensors), which adapts dynamically to conditions (temp, humidity, altitude, etc.) and so you can get a flash that works for all bikes and configurations (e.g., exhaust and filter changes) of a particular model. Besides more delivering more/unrestricted power, they provide earlier exhaust-valve opening, better idle, faster QS shifts, rev limiter increases, etc. It costs most of $1000 but totally transforms the bike.

[@sungerbob1786]

please more content on re-flashing, tuning etc..

[@cisium1184]

California: "NO MORE FUN OF ANY KIND!" Ari: "May I have ten thousand marbles, please?"

[@t-ravr.1628]

How he explains the glasses vs lasik was really helpful..thanks

[@Steve-ec6ed]

This was perfect timing Revzilla! I've been on the fence on whether to get a power commander or just get the flash on my R1 and now Ari drops this vid! Def think I'm going with the pro flash and mail it out. Especially now in NJ with all this damn snow my bike has a little bit of downtime unfortunately.

[@AriH211]

Especially with Yamahas, FlashTune is the way to go. They've spent a lot of time developing tunes for the R6 and R1 for racing and other applications.

[@brockwilliamson3944]

Where do you recommend to send you ecu too I’m scared to send it in the mail an never see it again or have some one mess it up!, I have a (2007 r6)

[@frankpeutz9106]

Hi Ari, good to see you back in a workshop! Greetings from Belgium!

[@ness3415]

Just wanna say, loving the feel of the PCV on my 16' ZX6R. Can tell the difference night and day and finding the tune was easy enough. Only chose the PCV over an equal flash because if I wanted to change my flashed settings, I'd have to remove the ECU everytime and have it sent out compare to just plugging the laptop in the garage to the PCV

[@Apollo-Computers]

That's why I bought the flash tune kit and did it myself, along with flash tunes Auto tune. It's been amazing, as many flashes as you want and helps dial everything in.

[@unclealzbbq2185]

if the auto tune works then there should never need be another adjustment@@Apollo-Computers

[@Apollo-Computers]

@@unclealzbbq2185 it works amazing.

[@weimaaan]

How can you tell if a used motorcycle has had its ECU reflashed? Does it leave a trace?

[@weimaaan]

@@TylerTron21 thanks for the explanation! So basically you compare the 2 maps to see if it has been flashed. If the bike was reflashed with a different map then reverted back to stock then we don't know if it has been reflashed before then?

[@weimaaan]

@@TylerTron21 yes, i was wondering if it's similar to odometer tampering/reset. I guess another way is to bring the bike to a shop/dealer to get it checked

[@nick4506]

@@TylerTron21 i don't think many motorcycles have a date function so I don't think its possible to tell when it was done, or even if there is a mechanism in the code to keep track of that.

[@combatmachin0262]

Also almost everybody that does a ecu flash usually put there brand sticker on the ecu

[@justaguy4real]

2:22 amazing how they've developed so much and so well

[@PattyBTX]

That R6 though 😍

[@fredflintstone4087]

Your vids are super helpful and keep the spark going in motorcycling!

[@snippidippi]

Flash are better for performance as you can remove all limiters. Most bikes doesn't give 100% gas then given 100% as ecu is limited. Power commander doesn't remove this limiters and usually just give 1-3hp and is mostly over 500$ for almost nothing. I would go for a full ecu flash with all limiters removed.

[@abdullahorefan5269]

Love that you have an R6 as background with this topic 🤣🤣

[@cr-fc5rb]

one point that wasn't covered is when it comes to selling the bike you can remove the power commander and sell it separately. a flashed ecu may make the bike easier to sell but not necessarily add value brilliant content. glad to see you guys are back 👍

[@jamesatwood4433]

love thew new shop! hopefully this means we'll get a lot more videos from you!

[@cpuuk]

Nicely explained sir. As an aside, anyone noticed that long established models that are tweaked to Euro5 tune are returning poorer MPG than previous Euro tunes? Point being that making a bike use more fuel seems counter intuitive to emissions endeavours (California).

[@eltoast]

Vcyclenut flashed my fz09...best $250 I’ve ever spent

[@CactusJack252]

ECU reflash is the way to go

[@Firestorm637]

Glad you stated the emissions stuff. Most bikes are good enough from the factory for most applications. The factory exhaust compliments emissions, noise, and performance. If you alter the exhaust you must alter everything else. Most the time the throttle feels more responsive but not a lot of horsepower can be gained. Next time just buy a more powerful bike from the factory. Less depreciation with OEM vs add ons later.

[@3BoOoDTV]

Im considering a PowerCommander on my GSXR 600 because I dont trust local shops to do it since they are know of modding SQUIDs bikes who like to flames 🔥 coming out of the exhaust and the don’t really care about performance

[@dougturner370]

Great to have you back, you always provide good information 👍

[@THEelduderino]

Great basics vid! Depends on the type of bike, pros & cons for each. For PC good if mods done Vs coming, & warranty. Piggy backs give you the option to continue to amend, start w/ pipes, but later add a cam, can change w/ no additional $. Also, new bike under warranty, if you have a piggy back & something goes wrong, you can go back to stock, flash is static & dealer may argue to void. Beyond the 2 options Ari mentions, Smart tuners w/ Autotune go further, sensing your elevation, temps, adjusting. & better than both a flash or PC, a true ECU replacement like a Thundermax Autotune. No piggyback, dyno tunable, larger O2 sensors than factory, then Autotune out of previous maps, revert back to old map at any time. V&H is simplistic Bluetooth option, quickly changeable in app, but limited, uses factory O2

[@Zookeeper101]

Power commander now has an add on auto tune, so you flash the PC for your tune and the auto tune adjusts fuel mapping for elevation/ etc.

[@thesimniok902]

The end had me chuckling.

[@bishalnaik2011]

Please ,keep on bringing episodes like these with ari

[@AriH211]

You got it!

[@jordanjoestar8839]

Definitely interested. Just got a GSX650F, and it surely is no monster. Sounds and rides great but I definitely want to bump up the 85hp.

[@johnmcgrath3907]

Glad to see you made a full recovery! Love your videos.

[@chrisbravo7659]

Seriously love watching your videos man helps me Soo much bro

[@chrisp.5272]

ECU flashes are the way to go, but not all ECU flashes are created equal. Trying to squeeze as much power out of my 2020 R3 as possible, and after some research it’s pretty clear not all companies offer the same level of performance, skill, testing and development.

[@alexandremartins5147]

Great language and images. Looking forward to all new episodes of technical matters.

[@poledancerz1]

Awesome new set. Can't wait to see more episodes - and I hope that we can expect them more often as well :)

[@aalan7850]

Ecu flashing is superior. Had both.

[@DarkHorse08]

Actually, both are best. ECU flash removes all the restrictions. Piggy back modules will allow for live on the road/track tuning with real world air intake at real speeds. WSBK, MotoGP, and many other racing platforms have different tunes for different tracks. I would go as far as saying flash is superior.

[@TheStp77]

I love how a custom tune increased my fuel mileage but yet it’s illegal

[@TheStp77]

@FailZero nope even worse Quebec Canada, 5 months of riding if you are lucky, 2200$ in plates a year, 1000$ for insurance and a cop on every corner to give out exhaust modded/flashers too small/missing reflector tickets. Basically if its not stock your looking at 500~600$ in thickets

[@TheStp77]

@FailZero nah its been like this for over a decade. Way before trump, started with all the straight pipe bikes, too many peeps didn’t care about the noise they made, people started complaining about the noise so they started passing laws and its been downhill ever since. In all fairness i kinda understand the people who complained, im a bike guy and when 50 big cruisers would drive by it was just crazy, they drive by doing 50kph reving their bikes to turn heads.we only have 1/10 the population of the states so it doesn’t take a lot of complaints before it becomes a majority 🤷‍♂️

[@SKITTLELA]

Even though mileage is improved, it possibly worsened emissions. That said, if emissions improve, I don't see the problem.

[@twowheelpilot]

@FailZero true!

[@twowheelpilot]

@@TheStp77 WTF, is it really that bad?! Jesus haven't they got really criminals to harass and worry?

[@lapara14]

Can you guys do a session on suspension adjustments? ei: going over rebound, compression and stuff and what each setting would do.

[@stevecurcio1204]

Just check out Dave moss tuning he can even do a remote tuning session for you based on your riding style

[@AriH211]

We just filmed a “Suspension Lingo 101” vid and will do more suspension vids in the future.

[@lapara14]

@@AriH211 music to my ears. Keep up the amazing content.

[@dimosk7389]

i would also suggest to watch Dave Moss tuning channel for more in depth info on suspension

[@ThatGuyKappa]

best bike channel on this planet maybe this universe

[@andycullell8521]

Is that rim in the background from the time Zack highsided the zx10r when you guys were testing out the liter bike shoot out?!

[@TBuidroneshot]

I think it is!

[@AriH211]

It is! It's too mangled not to hold onto. We'll mount it on the wall eventually.

[@AhmadAli-zj9wh]

Link to the video please?

[@bigredjcom]

@@AhmadAli-zj9wh it’s from the “Class of 2015” showdown on the Motorcyclist Magazine KZbin channel. There isn’t a video of the crash to my knowledge, but they show the wheel and the marks left on the track. Link: kzbin.info/www/bejne/goHLdJyXft17oZY

[@willmrx]

I enjoy Ari's videos and podcast's very much! Keep up the good work.

[@89StarquestTSi]

Ive been using a Power Commander on my TL1000R and i have to admit i like it but it reminds me of setting up an AEM, MegaSquirt, speeduino, Haltech, Power FC, etc, type system on nissans, mitsus, Ford, etc... I guess growing up in the time period of "eprom flashing" turned me away as it was tedious work at times. Simpler to jump into a laptop and tweak injector duty cycle or scaling than burn an eprom and install it

[@scoutrifle6827]

Always love Ari's tech videos!

[@crumpet_]

Love this series, always learning something new. great production, script and presentation!

[@evinsprague]

Great set up and a awesome video! I like this little segment and the dude is pretty cool

[@tomdickharryjane]

Went with DIY and bought Woolich with the logbox to measure AF ratios with a wideband sensor. Seems much better, but gas mileage has gone down. So...

[@philipbyrnes7501]

Nice to see ya back on KZbin Ari, long time no see.

[@MofosRealReviews]

The video we’ve all been waiting for.

[@victorvannatter312]

That's cool I did not know he had an identical twin. It's also cool that they have the same interests

[@Nekminute]

Had a dynojet piggyback module in my 2012 S1000RR that thing made me run on 2 out of 4 cylinders every 800-1000km's or so had to keep changing spark plugs and what not. Removed it in the end never ran smoother

[@JDeezle21]

We need a shop manual walk around

[@theoriginalmungaman]

You can use a Dynojet tuner that isn’t permanently connected to the bike.

[@Joshuawelds]

I Trust Ari So Much that I would hand over the keys to any of my bikes With Zero Questions whatsoever....Thank god he's back on KZbin!

[@AriH211]

Hmm, whatcha got in your garage Joshua?!?

[@underworldringside]

Best motorcycle presenter in the business

[@nurseratchet8535]

I'll go tell my wife that we need a CBR600RR now that I understand the difference :o) As always, the clearest, no BS explanation on a topic in the shortest amount of time, free of crappy music overlay. Been following you from the beginning of my MC journey, glad to find you over here at Revzilla, Ari.

[@kiwi2631]

So glad to see you and Zach doing what I loved with what used to be a stellar mag. That subscription renewal died long ago. Go Revzilla and screw Cali (govt side that is).

[@josech]

I ride a 1090R. Don’t know that feeling of needing more power or faster throttle response, just switch to sport mode and go.

[@seanphelan5408]

Awesome video and great explanation. Thanks🤙

[@jordanhoyle577]

Will the power commander work if I already have a quick shifter that is already piggybacking of the coil pack?

[@OCleirigh1776]

Great explanation guys! Thank you

[@jamelvilmont3561]

I don’t believe you need a tune, ecu flash or power commander if you are just changing to a standard aftermarket airfilter. Maybe depending on the bike, but a the stocked ecu on some newer bikes will be able to adjust on its own?

[@robertvondarth1730]

I guess the most confusing part about power commander, is how do you know when do you have the optimal map? Does it give you read out that you can then study and adjust?, I just see everyone looking for premade maps, and what I’m trying to do that does not exist

[@ralphwaters8905]

I made a couple minor mods on both intake and exhaust of my FZ-07, but left the catalytic converter in place. I'm not a huge environmentalist but I do what I can... 😁 Initially, I planned to use the FTECU "on bike" harness with the Active Tune option (wideband O2 sensor) but the cost for this was over $700 plus welding a new bung in the exhaust, so I had a 3rd party (2WDW) flash my ECU instead. After several tries, it became painfully clear that the FTECU firmware was no longer using my stock O2 sensor under any conditions, and the engine ran chronically rich. I put a meter on the stock narrowband O2 sensor and saw it always output 1V (rich, not cycling as it should), and the exhaust smelled of hydrogen sulfide (rotten egg) which also indicates insufficient O2. I was told the stock O2 sensor was used, but my test data consistently refuted this claim so I ended up going back to the stock ECU. The moral of my story is that if you install a full exhaust (no cat), a flash tune is probably a good bet, but if you want to leave the cat in place, save your money and stick with the stock flash.

[@AfromanSkeeter]

Bauce all the way for flash tunes!

[@ranvirsinghnetam8584]

Ari i am currently facing a problem of fork oil leak due to a scratch please make a video on various reasons of leak and how to i can repair that scratch PLEASE

[@madhuspartacus]

Very well explained topic. Well done.

[@troyangle7311]

Moore mafia reflash worked great on a 300 better throttle better idle cooler running even the exhaust sound got deeper well worth the money ..bought used ecu off eBay for flash tune kept original ecu if ever want to return to stock..but why stay stock..the used ecu and flash was cheaper than power commander..call Moore mafia

[@MRR-qv3bw]

Brand new bike owners with warranty @4:57 this is highly recommended before getting your bike serviced. YOU'VE BEEN WARNED!

[@rezaali2751]

thank you for explaining

[@JamesBond-ph6hr]

If, for example, you absolutely loved the R1. The looks, the sound, the handling but found it far too powerful, is it possible to detune the R1 where it makes 50% less power? Thank you.

[@moosecapades1722]

Buy a 400

[@underworldringside]

Flash has killed off piggy back units. I flashing my MT07 with full termignoni

[@joeyg29jgjg]

Got a discount on 2wdw at christmas. Got my ecu back and still haven't been able to ride. Damn you winter!

[@KB-yj5xp]

I had 2wheel flash mine last year, I’m super happy and I’m sure you will be too.

[@tegolesgo1215]

Have you rode your bike yet ?

[@LennertWanders]

What about installing a fully programmable one like a Haltech ? Why is almost no one doing that? While in car land it is a very common engine tune compoment.

[@sennsir]

Nicely put, Ari! 👏🏽

[@DarkHorse08]

You need both for the best performance. Flash removes restrictions, lower fan temps, native quick shifting, etc. etc. Piggy options allow for live on the road tuning under real world conditions and real world air intake. WSBK and MotoGP bikes run different tunes for different tracks for example. Many professional tuners will tune a car or bike on a Dyno and then take it out on the street or track and fine tune from there. You need both. You don’t actually “need” both but both will give you the absolute best performance.

[@paulson9616]

How reliable is this piggy back power commander v?

[@DarkHorse08]

@@paulson9616 No problems at all never heard of anybody having issues other bad tunes.

[@jeffkeni]

FRPO...got it!

[@gregstoller1229]

Thanks for your video. Well done!!!

[@robertparisi8016]

I believe the flash is better BUT. (1) I lose my 3 year warranty, (2) I mostly just want smoother throttle response, stop the deceleration popping, and maybe run this bike a little cooler, im keeping it stock with stock mufflers and air filter, im apprehensive about sending my ecu out and just waiting ( Ivan's reflash) . Is it a waste of money to do both? Still not sure what to do, thank you for the info though, helped a lot to make a decision.

[@brianhay4024]

Super helpful video. Thanks

[@axl9530]

Great work as always, love this kind of videos.So much useful information in one place ! Gg Ari, Gg Revzilla

[@UnrestrictedIsle]

Glad to see you back in front of a camera!

[@mikemorris1465]

One thing I've looked in to and been unable to find info on, is whether the stock lambda sensors on modern fuel injected bikes, can cater for an aftermarket full exhaust system with de-cat. I understand said sensors can adjust depending on environment the bike's working in, i.e. altitude as an excellent example. For me, a good article would be on whether the original lambda sensors are able to cater for new exhaust systems, end can and high performance air filter. Subsequently leading to adjustments being made by the ECU on new readings from said sensors. It's a bit of a minefield if I'm honest and I feel these aftermarket commanders are a massive money maker. - not that I'm against them in anyway. If there was some testing done with modern fuel injected bikes, say stock vs new exhaust system that would be extremely interesting to see how far you can take a stock set of sensors before a piggyback method or ECU flash is required. End of the day, piggyback modules and ECU flashes still use the same set of stock sensors, I imagine the main benefits from these types of tuning methods is to get rid of flat spots etc and to adjust the typically poor/snatchy throttle response of bikes which are set up to meet emissions regulations. - FYI, I'm no expert lol

[@gm2256]

love the set so far. looks nice!

[@mrmackee123]

I've been out the game for soo long . I remember jetting F2 ,gsxr and FZR's. You'd pretty much have to rejet at every track because of the atmosphere and elevation changes . Pain in the arse 🤭

[@AriH211]

Especially on an inline four!

[@georgegarcia3182]

That is what fuel injection is for my friend.