Random Misfire Encountered at Gridlife - Project BADASS2000 - EP12

[@adrian8426]

A friend had a similar issue at the track with his K20A, it ended up being the timing chain slop. It started just the same, all good on the first few laps and after it built some heat the chain would expand a bit, the tensioner couldn't compensate and the timing for the cam sensors took a dump. At first we thought cam sensors but all tested out good. Hope you fix your issue, but check timing chain out just in case.

[@XxChuyoxX]

Ap1's are also known to burn oil and running low on oil for long periods of time can cause the tensioner to go bad. They also bought the car with a lot of miles..

[@iliasmetalworks]

Happened to me, at wot. Trigger issues when I am applying full throttle. It's all about slack. Changed everything, cam crank sensor, tune was fine. A trigger scope through the ecu software showed the problem crearly. OEM ecu's by the way don't face those kind of problems. It's a problem that I see mainly in the forums not only with AEM, Megasquirt, Haltech, Motec etc.

[@o_OS2000]

Nice driving. Good to see speedfreaksusa getting some love! A majority of the parts on my own S2000 are sourced through them.

[@derickwong1956]

A buddy of mine had a similar issue on a supercharged AP1 S2K running AEM Infinity, high rpm misfires. The Infinity reported cam angle errors. The cam angle sensor knocked against the pick up slightly. There was slight marring on the sensor. After spacing the sensor several millimeters, it ran flawlessly. Don't know if this will help, but good luck!

[@doctajuice]

Can't thumb this bc I'm on mobile rn but seriously we need to get this comment to the top. This could be the savior!

[@speedacademy]

It actually is a timing filtering setting on the AEM that we adjusted and it seems to have fixed the problem. Such a simple fix but at the time hard to determine what it was.

[@derickwong1956]

Great to hear that it has been fixed. Now to make some jam!

[@tictac4540]

sounds like it could be the vtec solenoid or oil pressure cause its not kicking in to vtec and staying in low cam mode and will drop all power at 7500

[@wobagger5578]

Right.

[@seinfeld11123]

i said the exact same thing

[@porscheguy6972]

That moment when literally VTEC didnt kick in, yo

[@jkflorida]

Totally agree!

[@Joe11Blue]

Their VTEC engagement is like at 4500. That's something you wouldn't miss while driving with ITB's.

[@f22cap2s2k]

This vid is why I love the s2000 so much...because damn near every owner I've met supports the s2k community.

[@jkflorida]

Damn that black and white Si was doing work! Great video guys!

[@SpeedFreak0122]

Damn PT with some wicked driving! Great video guys!

[@dpark3936]

Glad to see you guys back with your Badass2000! I really really enjoy watching them!

[@boostben]

That FG2 Civic was mint..

[@cancinoevil]

had to be supercharged, it's sounded narly.

[@b18c1love]

k24 with a rotex

[@willyjameshuff]

You guys are the only ones that I give a thumbs up to before I even watch the video.

[@speedacademy]

Well thanks!!

[@mcdadcoleman]

S2000 life, rev match downshifting into 2nd at 65 mph. Nice driving!

[@RobertKohut]

Too bad about the misfire, I'm sure you'll figure it out. Great driving!! Looks like you had fun!!!

[@jorges2000]

You guys will have the problem resolved in no time. looking forward to follow up video.

[@elguapok20]

Hey I was at Mid-Ohio with that camo wrapped Miata! Fun to see people I've seen in person race with you internet famous guys. Hopefully I can make it to gridlife next year.

[@jesseestrada260]

The BADASS2000 wants boost!

[@speedacademy]

Yes it does!

[@nox0underling]

like another commenter said, check spacing on the Cam sensors, also, check your Ignition control module, its possible that it has a fault or a crack that causes a short high rpm.

[@precisionhonda4384]

Finally s2000 video!!! Thank you.

[@adrianperez9894]

The injectors were upgraded but was the gas pump upped to handle revving that high and that much fuel? Maybe oil pump isn't pushing enough oil to the solenoid for vtec? I'dk I'm not a Honda guy but I'd check that area.

[@chrisjay555]

Look forward to finding out what the problem of this car is.I have a Saxo on ITB's & it started misfiring at exactly 6000 rpm. Changed ECU, coilpack, injectors, spark plugs, fuel pump/fuel filter & still no luck.People have suggested crank sensor which I'll try but think the car may have a bad Earth on it somewhere. Horrible fault to diagnose but I really hope you find a fix.I was maybe thinking of putting OBX bodies on my s2k one day but seeing this & having trouble with them myself makes me think that they are not a viable option.

[@seandonaldson5084]

The Potenza RE 71R's are soooo good. Run them on my Fiesta ST. They make that already capable chassis into a superhero.

[@brianrobinson9979]

it sounds like the same problem that I was having with my 2006 Ford Focus ST. I would definitely recommend replacing your EGR valve

[@MrBazuzi]

So... I was the gentleman who had attempted to visit you guys up there near Toronto just before you guys left for Gridlife. and I can't help that if I had made more of an effort to see the car, that maybe you guys would have found and fixed the problem before hand! Sorry dudes! I wish things had gone better!

[@J0EL3H]

if its happening around7500 maybe Vtec solenoid?

[@vincevegacustoms8860]

i would do a scoop+box setup on the itbs...in the tune there is a feature to limit power and rpm at a certain temp verify it that could be it

[@kimmmichael]

I had issues during low rpm of the car bucking right at 2300 rpm. Try checking if the throttle position sensor? may have a weak point during the throttle range? Couldn't buy just the yep tps from honda so took apart a d-series throttle body and it fixed my issue.

[@speedacademy]

We datalogged TPS and it looked fine. That's the puzzling part. Everything looked good in the logs. We think we have a fix after talking with AEM, so we'll report on it in the next episode.

[@Orfeas_christodoulou]

Nice video guys,sad to hear there was a misfire.I'm sure it's something electrical(it always is haha :P).Btw Pete you were in the bonus section of a Speedhunters article covering Gridlife.Living that #famouslife now lol

[@rainezombi3431]

that bumblebee tore you up at 10:13 lol

[@s4m2]

You guys may have already solved the issue, but I had this exact problem on my F20C swap with an AEM Infinity. For me I had to repair the cam sensor wire (harness was damaged) and set the VR_PWM above 500RPM to 80% instead of 60%. I left the noise cancellation at whatever the base map had I believe.

[@speedacademy]

Awesome, thanks for the additional feedback. We appreciate it.

[@Streeter_NSX]

I know this is a long shot but on mine, I had the same break-up at 7300 rpms and it ended up being a cracked valve. I over-revved the car at a track event and cracked it but it didn't start showing issues till a few days later. It acted like an electrical issue but after replacing everything, nothing fixed it. My tuner suggested the valve being the issue after seeing a similar issue on a Z06 and sure enough, that was the problem. Like I said, it's a long shot but worth looking into down the road if you can't figure it out.

[@speedacademy]

We actually checked the valve retainers for cracks and have since ruled that out. We've found the problem, so will have an update in an upcoming video :D

[@Streeter_NSX]

Awesome, I'm glad to hear it! Looking forward to the update video!

[@griplimit261]

I would pay more attention to the ignition system, run a colder plug and gap it down a little from stock, higher ambient and motor temps can effect cool efficiency especially at high rpms.

[@griplimit261]

not cool... coil efficiency. damn autocorrect

[@MMMitch248]

You should do a valve adjustment a lot of Hondas miss fires when the valves are to tight or loose

[@jinnypark240]

Valves can be bouncing at that RPM. The valve springs possibly may be needing a replacement or an upgrade.

[@speedacademy]

Thats not the cause but we've got a video coming soon replacing them!

[@jinnypark240]

Sounds fantastic!

[@samuelcorbett243]

Sounds like you're losing engine sync (Cam or crank angle dropping out). Check if you can do a trigger log or see if there is a Sync loss event you can log. Either that or it sounds like when you stab the throttle on the gear change you're dumping in heaps of fuel (Acceleration enrichment) after a momentary lean condition (Throttle off for gear change). Depends how you have your AE setup I suppose. I've never tuned Alpha-N before..

[@doctajuice]

That gen 8 si came in and ripped you apart! Sick driving though, figure it out soon. I want a video.

[@speedacademy]

Welcome to K-power and R-compounds!

[@hoodieninja1642]

are you using the injector plug and play harness? i've seen a lot of people have misfires with those harnesses.

[@wurstbroto]

I had the same issue with my vems.Mooved the crank sensor 0.2mm closer to the triggerwheel and it runs 9000 rpm instead of misfiring at 7200.Distance is now 0.8mm.Hope it helps.

[@christopherfbye]

Could it be something with the ITBs? I hear they need retuning a lot of the time based on location, altitude, etc.

[@speedacademy]

Nope, definitely not ITB related. We've since tracked down the problem, so stay tuned for an update in the next episode :D

[@MLeeder53]

I've told you before to use the Bridgestones!! Lol. Amazing tire!!

[@kanatsizkanatli]

lessons learned re getting your s2000 to peak performance. 1) Don't bother with CAI, ITB, AEM infinity/tune, 'high flowing CAT' etc ..save tens of 000's 2) Do some weight loss, get good tyres, suspension, aero and brakes costs much less 3) if money to burn do a good lightweight free-flowing exhaust..and that's it! Keep it Simple! oh i forgot the most important thing! Good alignment!

[@williamperdomo9280]

My buddy has the same exact set up and the same exact issue. Spent tons of $$$ chasing the issue. Hopefully you guys figure it out and get back to that TrackLIFE!

[@speedacademy]

It turned out to be a simple fix, just a timing sync filtering setting on the AEM that needed to be changed!

[@KidLightning87]

its the temp sensor calibration … its going into fail safe. go to the AEM tab called protect. it cuts fuel if your temp is crazy. i just went through this.

[@speedacademy]

We wish it was that but it was a timing sync issue in the software.

[@bgfcjoe]

maybe its the giant white shift knob lol....great video guys. cant wait for the update episode...

[@speedacademy]

Dave hates the shift knob hahaha!

[@TyMYLINE]

Would you guys mind putting a cam to record your footwork? That would be "badass"! Keep it up guys.

[@mrskyserious]

Civic was putting you through the paces.

[@Em0KhRiSxP]

Did a bird shit on your Go Pro @ 9:30 ? Lmao

[@speedacademy]

lol that or a bug.

[@heyitscarloc]

I don't really comment much but this video was worthy. I'm really enjoying this series. How do you like the BADASS2000 vs your FRS build? I can't wait to see more vids!

[@speedacademy]

Both are awesome cars but the S2k is my choice for the funner track car because of the engine. The FRS is definitely the better all around car both on and off the track.

[@FPAUTO]

careful with those E3 plugs. the tri-tip end broke apart in a friends mini stock 2.3 ford, it was not good! but it could just have been bad batch, I don't trust them. stay with NGK. love your content guys!

[@speedacademy]

We're going back to NGKs. We were desperate and wouldnt ever really run them.

[@ChaseHoffman]

Ass2000 strikes again! Oh well looked like a super awesome event!

[@athiam152]

what kind of air intake? looks like the radiator fan blows some air to air intake through the hose...

[@PentagonPirate]

My s2000 had the same sounding issue, ended up being the harness clips for the coil packs. They would vibrate out and in and cause the misfire issue, eventually it got worse to where the car was undrivable. Guessing you guys would have found that out when swapping the coil packs so it must be something else.

[@speedacademy]

Yeah, we tracked it down to a setting on the AEM Infinity, such an easy fix at the end!!

[@roberthale8407]

Could it be a bad ECU? Maybe a trigger transistor for a specific coil cannot go above the frequency required for 7500 to drive the coil and drops the voltage at that point? You showed you did two + laps and then the problem showed up, how hot was the ECU? Also, does the ECU have a good ground?

[@speedacademy]

All good questions, and we did think the same so we soft mounted the ECU (it lives in the driver's side footwell area on the fender side). We swapped the coils and that didn't help either. We've since found a fix, which you'll see in the next episode.

[@roberthale8407]

Cool. Looking forward to see what the issue was. BTW, on a different topic, what is the rarest Japanese car you guys have seen? I have a unicorn JDM car lurking in my garage, one of two running in the states.

[@pFbSpecV]

Dammm that si was rolling!!! But sucks you had issues with your s2k!

[@andersw1152]

Did you guys check those quick and dirty injector connections you made before? My only other advice is just get kpro, works great on mine :D

[@speedacademydave]

Hey Anders. Ya man, all the wiring checked out. We logged AFRs and they were exactly where they should be throughout the rev range with no fluctuations when the misfire happens. We're fairly certain now it's a cam position filtering feature in the AEM that needs to be sorted out. AEM sent us some info on this so we'll be testing it out next week.

[@AMIRE360]

wich rollbar is installed in the 2nd S2000? It looks interesting

[@MagicJumpingBean]

What ended up being the cause of the misfire?

[@jdmcommute]

Hey guys, how did you mount the ECU? Because if you did not mount the ECU with isolators to cancel out vibration, just the harmonics of the engine going through the chassis could cause a tuning issue like that. Hondas have crazy harmonics that are known to crack welds, I would try to see if that is an issue.

[@speedacademy]

I actually added a rubber isolator to the ECU mount figuring it could be a vibration issue. No luck, turns out it was a simple fix with timing sync filter on the AEM.

[@jdmcommute]

+Speed Academy Nice! Good thing you got it figured out. That was about the only thing it could have been. I've never messed with the new AEM.

[@seinfeld11123]

vtec point is 7500 rpm? maybe the solenoid is blocked. or sticky injectors. what does the AEM say about your vtec control? adjust it to come in at 7,000 see if it starts the miss earlier

[@onejay09]

pretty sure they changed when it kicks in when they had it dyno'd

[@imcanadian11]

Vtec kicks at about 5000

[@jccivic]

those hood vents on that s2k any info if they can be purchased

[@UnderAchievrLP]

So much nicer is the black dash then blue!

[@ravenstylea2]

Another super sweet vid!!

[@luishq9945]

Check the timing chain. It may have slop, causing misfires

[@doctorlobsteroctopus]

Why didn't you guys run the Tundra haha?! Finally tracked down my last issue that was keeping my car from starting after a motor replacement, I understand the frustration when you can't pin down whatever little thing is holding you back.

[@speedacademy]

Haha, the Tundra isn't ready for the track yet! Needs rotors first :D What was the problem with your car?

[@doctorlobsteroctopus]

+Speed Academy I sincerely hope that there's a track vid coming from that haha! It was a bad MAF. it was keeping the car from running, it would cut off after a few seconds.

[@johnheiser1972]

You might want too check for a broken or low spring rate in the valve train.

[@speedacademy]

Thats coming in an upcoming video!

[@mr.slowcarfast4802]

Seems like the dude at the end confused D.P. with Mat Farrah or were you guys on stage aswell? To be honest, there are some similaritys on the first glance :D Great video as always! Gridlife seems like the best event ever.

[@speedacademy]

GridLife is a blast, no doubt about it. We loved it, even with a broken race car. And lets be honest, Dave is MUCH better looking than Matt Farah :P

[@mr.slowcarfast4802]

Hmm i think Dave's wife is best qualified to jundge that :D Hope you guys get the car back to badass status and we get to see some sweet laps. Man i bet the car sounds so much better in real life! I've seen some cars with itbs on local hillclimbs and damn do they sound good. To bad microphones and speakers are not able to replicate the sweet noises.

[@wreckinplankton]

that fg2 was cruisin! Gotta get mine to that level

[@aaron5306]

intake and exhust guides are to loose making the valves not seal properly at 7500rpm like valve float

[@speedacademy]

Negative, turned out to be an ECU setting issue.

[@jccivic]

those hood vents on the grey s2k nice any info if they can be purchased

[@speedacademy]

We'll be doing that mod on the BADASS2k so you'll get to see how to do it step by step :)

[@nathanielbarbeau4821]

Maybe increased air velocity from the ITBs were blowing the spark? Spark plug gaps maybe? Oh well. It works fine now, and It was 2 years ago 🤓

[@Aaronx3Sally]

why do you race with the fan on? i'm aware it's not the A/C but wondering why you turn it up and so high when racing?

[@H4DBN]

to release more heat through the heater matrix

[@MyLonewolf25]

Keep air moving and to get some more heat out of the motor

[@Balo657]

11:03 stock em1 si?

[@jfv65]

seems you needed to shift up halfway into some corners because you nearly bounced of the revlimiter. This upsets the car balance in mid corner. Have you ever tried short shifting UP before the corner? it keeps the car more balanced while rounding the corner and you can keep your right hand on the steering wheel and you foot planted on the gaspedal. about the misfires: do these occur mid corner? under high G force conditions? Maybe it is a fuel pickup problem? this could lead to lean misfiring. other possibility: crank sensors often need mesh shielding around the signal wires. If the shielding mesh is damaged any radio noise (emitted from other electric components such as the alternator) can interfere with the block signal coming from the cranksensor. It can cause the blocksignal to become distorted which could lead to misfires. Might be worth checking. Furthermore: ground connections between injectors and block, between block and body, between ecu and body and between body and battery ground terminal are super important and should be corrosion free and clean. Any bad connection can cause unwanted resistance in that specific circuit.

[@speedacademy]

All interesting thoughts, and ones we considered while troubleshooting at the track. We've since found a solution to the misfire, which we'll update you on in the next video.

[@gregoryaul2005]

could be loosing voltage through the twisted injector wires

[@grapeknutz]

Valve float?

[@coldvaper]

Sad to see the Ass2000 down and out, hope next go around its all good to go.

[@speedacademy]

It'll be back up soon, we just need to source some more go-fast parts :)

[@coldvaper]

lol

[@daisyduke4919]

could it be a coolant temp sensor fault? was there an outcome?

[@speedacademy]

ECU timing filter setting. When we talked to our AEM tech he got us sorted right away!

[@doctorlobsteroctopus]

Holy crap, what was in that civic that overtook you, that thing was nuts!

[@speedacademy]

yup, K24 supercharged Civic. It was quick!

[@doctajuice]

+Speed Academy it sounds so nasty!

[@GItoKeG]

RIP in peace unknown bug 9:31. :(

[@safwanhussaini3381]

lmao I know right!

[@mrmidnight32]

Ito Ke you do know IP in RIP stands for in peace right? Lol

[@shuffleday1234]

Where is it?

[@task5147]

@10:03 😮 the retainers!

[@task5147]

Passed a Miata though...😅

[@sambeliveau5797]

Had the exact same symptoms on my F20C with AEM Infinity - for me it was a slightly damaged cam sensor 1 wire AND the VR PWM table above 500 RPM needed to be set up to 80 instead of the default 60 or whatever. Haven't had any issues since and I believe my noise cancellation is default still (might be 20 though) - check that VR_PWM setting! Here's a thread I originally posted: aemelectronics.com/?q=forum/stock-f20c-cam-sync-error-around-7500-rpm

[@abelgonzalez1945]

great vid guys

[@mrmidnight32]

Anyone know where you can pick up one of those #GridLife banners? I kind of want one

[@b18c1love]

you must compete in the track battle . they are not for sale .

[@jeff1221]

Wow, I've never heard Ryan seacrest swear 😂

[@jamescho3930]

Valve adjustment is needed maybe?

[@speedacademy]

It's on the list of to-dos!

[@supradma71]

What was the cause of your misfire issue?

[@speedacademy]

the spun rod bearing was causing the oil pressure to not activate VTEC which caused the misfire.

[@qotsa1]

I'm pretty sure my head gasket went today. I feel your pain.

[@speedacademy]

Ouch dude. On a S2000?

[@qotsa1]

+Speed Academy on my legacy spec b. Just means time to build it for more boost

[@ryanramirez7563]

The misfire mystery strikes another s2000

[@mrgallonsof]

in canada where can i get my hands on recaro spg seats?

[@speedacademy]

Call the guys at NV Auto, they can usually get REcaro seats.

[@mrgallonsof]

+Speed Academy thank you :)

[@Sleepersunfire]

is the cars speedometer in mph or kmh?

[@speedacademy]

Our S2k is in KM the grey S2K is MPH

[@ChavaYang]

Finished ass/badass2k in 1 day. :( Patiently waiting..

[@speedacademy]

Haha, we've got a few more vids coming in the future.

[@AlyxTF]

The hood camera was dope until a bug flew into it lol

[@TonysTechAndCars]

Please tell me your joking about that bumper mod... =)

[@MattBeardless]

Maybe an injector fault? Failing that a couple of timing sensors

[@speedacademy]

It's a timing sync error that we're working on fixing through a simple parameter change on the Infinity!

[@MattBeardless]

Good stuff Speed Academy :)

[@rolandotillit89]

You mean the ignition timing is off? The faster intake from the ITB's probably changes the speed of combustion, to get the most out of it you would need adjustable cam gears, along with tweaking the ignition advance to match the new combustion characteristics.

[@marcosaruca5283]

could it be the timing chain those tend to go bad on the s2ks

[@MrJockeyHD]

I'm sure all other belt driven components are working so no

[@Wreckedekcoupe]

+MrJockeyHD if you dont know honda please keep to yourself. many people have commented it could be timming chain/ cam sensors

[@MrJockeyHD]

+Mika Allard if everything is driven off the belt is working it's not going to be the fucking belt is it

[@marcosaruca5283]

MrJockeyHD makes sense but it is a common failure point i just dont see it being electrical

[@MrJockeyHD]

+Marcos Aruca I believe it to be the vtec solenoid but if it turns out to be the timing belt then

[@FreestylerAlbert]

FINALY!!!!!!!!!!!!!!!!!!!!!!!

[@Super73VW]

its the twisted fuel injector wires......

[@SAVAGEcorpsman]

What track is this?

[@b18c1love]

gingerman race way south haven MI

[@SAVAGEcorpsman]

Thanks!

[@b18c1love]

+SAVAGEcorpsman that's my car BTW:)

[@SAVAGEcorpsman]

Aaron Kwilas Awesome ride bruh!

[@itzzToon]

not gonna lie, this is kinda making me shy away from doing an ITB setup. Hopefully you guys will change my mind once you diagnose and remedy the problem. It seems like something simple.

[@speedacademy]

Ya, the problem is unrelated to the ITBs. The next video will feature the fix, which we've recently sorted out.

[@itzzToon]

+Speed Academy Sounds awesome. There's still hope for me yet.

[@blakes2k]

I wouldn't even run the ITB setup. It cost too much money for too little gain. You're better off allocating that money towards SC/TC if you really want power.

[@itzzToon]

+Blake Calabrese I'm not all about power. My main reason is my cousin's are all going different directions (ironically we all have s2k's and happen to all be different colors. Go figure), two of my cousins are SC'd and one is Turbo'd. My other relative is fully bolted and "stanced". bleh. Besides I've always been an all-motor kind of guy.

[@pcante4158]

that fg2 is goneeeee. must have been a k20/k24 frank.

[@PJeezy710]

I don't get why the cut bumper looks so sick lol