Downpipe Exhaust Problems - A90 Supra

Was expecting to be just fine since I took a "safer" route with a more expensive Powerneedy catted downpipe but unfortunately, it's throwing a Check Engine light so now I'm going to have to take the car back to stock or buy a JB4 piggyback tune... But more importantly, I might need a new engine
2021 Toyota GR A90 Supra
Absolute White
Powerneedy Catted Downpipe
Rexpeed Carbon Fiber Spoiler
Mini-mods: Wheels powder coated in Gloss Black, Valentine 1 radar detector, YiCar DashCam, weather tech all-weather floormats
Previous cars: BMW F82 (JB4) M4, 2016 m235i (JB4)
Shot on: iPhone 12 Pro Max, Sony Rx100v, GoPro Hero 4
Edited with: Final Cut Pro
Music: • FREE Deadmau5 X Kaskad...
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keywords:
yellow supra drivng carfection bmw z4 a91 supra bmw m3 f80

[@suprola7961]

It sucks. Toyota made this car to be modded. It was advertised as a moddable Supra for the enthusiasts. Then one year later, they beefed up the power and locked up the ability to tune. Sorry about your oil issues. They should have left the 2020 B58 in there.

[@OfficalBlackPanther]

Bro you just published the video in the perfect time , very detailed very useful for me 🫂

[@Powaup]

Happy to help 🙏

[@elvis_chen]

Some down pipes are well calculated with the air flow and able to cheat the ECU to avoid the CEL e.g. Rushplux. I have it installed for several months on my MY21 with no CEL at all.

[@Powaup]

Yeap! I have friends with AA that are very happy and no CEL. I bought the wrong brand

[@evlx14]

Great video man, very informative. Did you have to load any sort of tune when installing the catted downpipe? Do you know the power gains with the new downpipe untuned? Thanks!

[@Powaup]

Thank you! I didn't tune my car but I've seen other do the same and get ~20 whp on the dyno afterwards

[@jafethgarcia4819]

@@Powaupdid it affect drivability? Like did the car sputter or anything because of the catted DP with no tune

[@ajburke801]

Great video very informative.. I have A 2021A91 Built-in July so I'm locked out on the tune also. Installed a cated downpipe sounds great and the check engine light goes on and off. Check the gasket on the oil Pan for oil consumption

[@bigneutron77]

Your gas cap was probably loose, and I got the jb+ and by the ass dyno, you definitely feel a difference. If I could compare it to anything would be a sneaky peek nos system.

[@Powaup]

It’s happened twice the CEL coming on (again right after this video) I was able to clear the CEL by putting the car in diagnostics mode though. Glad to hear you have a good experience with the job plus. Once I get the whole engine thing sorted out I’ll figure out what to do about tune/exhaust

[@Powaup]

Going to be dropping my car off at Toyota soon to get the oil issue fixed and since that'll involve warranty work I've decided to take my car back to stock.

[@thebritish910]

I have the oil issue on my 21 too. Service is refusing to say there is an issue, just telling me to get an oil change at the maintenance periods. What did you tell them to get them to take to seriously? I have had many cars and a bmw in the past, none burn through oil so fast.

[@chris-bw8zh]

after you went back stock did the CEL go off?

[@Powaup]

@@chris-bw8zh yes it did

[@edwint1780]

The JB4 will definitely add at least 50whp to your supra on a 91 octane and about 80 whp on a 93. Doesn't matter what the starting hp is, 380 or the 335. The 2021 supras have lower compression pistons so you can run more boost than the 2020, so the jb4 may actually be even more effective on your car than the 2020 as its main means of adding power is by increasing the boost.

[@Powaup]

Thank you for the info. Do you happen to know if there is a “linear”/low torque map with the B58 JB4? That was my go-to when I had the M4

[@edwint1780]

@@Powaup There isn't a map that's made specifically for the linear power delivery. Supra's stock turbo is very small and quick to spool up, which inherently results in the powerband where a bunch of torque gets dumped all at once. The piggy back tune won't be as refined as a custom dyno tune, but ultimately, those who want a more linear power delivery need to upgrade to the pure 800 turbo. That will smooth out the power delivery.

[@user-vj8gm3dn1i]

Hey Edwin, you seem to know a lot about Supras. Is the 2022 Supra gonna be flashable? I heard its locked just like the 2021, but what are our odds?

[@skywalk3x]

I have a 2021 Supra down pipe, cold air intake, exhaust and Ecutek stage 2 tune. The first month or so I got the CEL light, and then it just went away. Ecutek has a clear that I used for the CEL but I haven’t had one for at least 7-8 months. The newer Supra’s can be tuned ThicWhips has a video showing the Company who has the tune. Also the Supra’s no matter what year will get, will get CEL.

[@Powaup]

Which intake you go with? I watched Thicc whips video recently, very excited for that ECU flash to become available (mine was built passed the cut off date). Enjoy the Supra!

[@skywalk3x]

@@Powaup I went with the MST intake and if you leave off the top cover, you can really hear the turbo spool and discharge. It sounds crazy

[@kelvinmejia8384]

My 2020 has a catless downpipe and the check engine light came on immediately lol. I want to flash tune it but I’m afraid of voiding the warranty for other things that can go wrong on the car, even though I own it out right that warranty is key. especially for the next owner if I sell it.

[@Powaup]

Warranty will be ruined if you go too crazy but as long your local dealer is mod friendly you should be fine with small mods

[@user-xb3nk6dx3g]

Ok years ago scion TC had same issues with the turbonectics kit. They sent a spacer that moves the o2 back out a inch and poof no check engine light wonder if this is the same fix ??

[@Powaup]

I’ve read from others that they still get the warning light. That said I was able to clear the CEL by putting the car in maintenance mode so should be good from now

[@biggusbestus551]

Next time someone gives me shit about having a 2020 Supra and not the "improved 2021" I will have a smile ...

[@Powaup]

Yup! Big perks for the first model year A90 Supra

[@beethoven8256]

I have a 2022 and I’m safe from the oil consumption issue lol.

[@ogtm8400]

My friend has a 2021 M340i same boat, can’t flash tune and he’s also had to add a quart of oil a couple thousand miles in.

[@Powaup]

F.... I knew it couldnt be just the Supras. Good thing this company has cracked the ECU so we should see tunes out soon

[@jaydevries1020]

I bought a 2021 with a build date of 03/20. My car has gone through 1/2 quart in 2,700miles (4,100kms) I've had zero track days, and I never beat on it. I'm wishing I bought a 2020.

[@Powaup]

Damn it... well at least you can ecu tune yours if you want. By the way. I’ve heard one count of a 2020 car with oil guzzling issue so maybe that some of those cars are affected

[@justin.cleary]

My 2021 was burning a lot of oil. 2-4 quarts a month. Car was stock/no mods. I traded it for a 2023.

[@iUsman975]

Mate, any luck with getting the CEL out? - I got decat Downpipes and it's throwing a CEL - cleared it with a OBD but it cam eback again, will try a spacer out this weekend to see if that helps

[@Powaup]

Catless downpipe will constantly throw a CEL. Only way to keep it off is a tune. My downpipe has a catalytic converter but I still get a CEL but not as frequently

[@589supra]

Get a tune brokie 😂

[@touayaaj84]

I run a catless Euromotive dp and i have a cel too. The cel does no damage to the supra. Just keep it on.

[@Powaup]

It doesn’t but I can’t get your car serviced at Toyota with it on and it’ll hide any real problems if you always have it on

[@hassandawoud5220]

Tune+intake+cf steering led wheel+ducktail+800 pure upgraded turbo+new breaks+toyo 888 rear tires = happiness

[@redneckedition1608]

Yo wallet be sad asf after 😂

[@patthonsirilim5739]

Toyota GR Supra A91 AT 382hp HKS Hipermax Touring spring kit HKS Drop in Super Air filter HKS Super Turbo Muffler HKS CARBON BRACE Antigravity Lithium Car Battery Hawk perfromance Dtc 60 brake pads Goodridge Braided Brake Line Kit Motul 5.1 braking fluid xHP Transmission Tune Advan Racing GT forge wheels Michelin Pilot Sport Cup 2 My take on the pefect supra is slight different focus soley on trottle reponse handaling braking performance and the joy of driving without having to worry about reliability.

[@DBABAE]

For clarity, the date that actually matters is your ECU date! The build date does not always coincide with the ECU date. Check this date first, your car may still be tunable 👍🏻

[@Powaup]

How do I find the ECU date?

[@DBABAE]

@@Powaup search “ecu 2021 Supra” on KZbin and there’s a couple videos showing how to! It’s very simple, just pop the ECU cover off and unhook it and pull it out slightly and you can see some numbers which coincide with the ECU date

[@Powaup]

@@DBABAE so I checked, unfortunately my ECU is past the cut off too :(

[@beexiong2995]

Did you try to wipe the code in diagnostic mode? You have to be in diagnostics mode to clear codes.

[@Powaup]

Just read about that. Will try and report back!

[@Powaup]

That worked 👍👍 although I still have to take off the downpipe to get the engine looked at. Thanks for the help

[@ericgarcia8686]

Hey mah man, I had a catless downpipe and got state reffed and just today I put pack on the factory downpipe and I want to know how long it’ll take for the Engine light will go away??

[@Powaup]

It’s really hard to determine. Typically if you go for a drive and keep the running for like 30 minutes it clears. But your best bet is to get an OBD2 reader and clear the code. I’m sorry you got state Reffed I know it’s a very painful process. Good luck!

[@Tenjitty]

should i get the VRSF Downpipe for my supra; i dont really know alot about downpipes

[@Tenjitty]

it is catted

[@micahhill4786]

See here’s the thing with high flow cats. I have one I’m my old turbo Hyundai Elantra for 4 years. Every now and the check engine light will come on for the high flow cat. The aftermarket cats do their job but not as good as the factory cats because the high flow cats are made to be well high flow. So it doesn’t filter out lot of stuff on the engine but it does get rid the gas smell so that really what matters.

[@wondrahsupra]

I just installed a CTS catted dowmpipe on my 2022 Supra and after a few miles I got a CEL. I'm really hoping that it will go away just like yours. Knock on WOOD!

[@Powaup]

Hopefully it goes away but my powerneedy catted dp has been a huge pain as the CEL will come back after 30 mins of driving. idk if I should switch to active autowerk or get a jb4 to clear it

[@wondrahsupra]

@@Powaup mine went away the next day and havent seen it come back since. thank goodness! i lucked out.

[@LewizFit]

@@wondrahsupra has it came on since then, Was looking at the same dp just don’t want cel

[@d_ball_dimee]

I installed a boost logic downpipe with o2 sensor spacers on my 2023 3.0 gr supra to cover up the CEL (it didn't work). But I have this weird idling noise or the car engine would shake rapidly sometimes when I'm parked or reverse or just cruising. Anybody know how to fix this without tunning?

[@jasonmiller2741]

Hey man, let me know how you go with this. I have the same Supra and just had a downpipe put on yesterday. No shaking issues though.....yet. LOL

[@d_ball_dimee]

@@jasonmiller2741 maybe I installed 8t wrong or something lol cause after about a 1 hour it happened

[@jasonmiller2741]

@@d_ball_dimee damn that sucks. Im already considering taking mine off because I dont want any engine issues. CEL came on like 10 hours after installing it

[@d_ball_dimee]

@@jasonmiller2741 yea the only way of fixing it is with a flash tune like jb4 has one

[@jasonmiller2741]

@@d_ball_dimee will that work on ours because the ecu is locked?

[@therealjulez7886]

Jeeez i'm actually ordering a 2023 GR supra. i'm defff going to have a locked ECU for a long time :(

[@wondrahsupra]

Also just noticed you're in the bay? Hope to run into you and talk supra some time. Keep the videos goin.

[@Powaup]

Likewise! I've been trying to go out to canyons more on weekdays lately because CHP has been all over lately

[@Mike-dd8bd]

I think the whole Jb4 thing is trash. Such a pain in the ass to install and doesn't even allow full access to features. Only gives you little more boost. I have a supra and love it but its just not a car I even want to mod at this point. I would just do cat back + rims and leave it alone.

[@jaywalker4206]

You’re incorrect. It’s not when the car was built. It’s when the ecu was built. If the ecu was built after 6/2020 then it’s locked. Check the ecu build date on the unit itself.

[@Powaup]

Thanks for the help. Someone else noted that early but unfortunately my ECU was still born too late

[@WineHouse33]

I’m in the same boat. Mine was built 1/21. I’m debating on running the JB4 myself.

[@Powaup]

It’s annoying because watch. Soon as you buy the JB4 then BOOM someone unlocked the ECU. At least that would be my luck

[@Kiteboarding316]

You should have a tunable DME. Just need an unlock. Check the Manufacture date on the DME and reach out to Visconti Tuning.

[@BenMcNelly]

TLDR: Early adopters got a tunable mod friendly engine and car, A91 got a new engine and more power, but locked down car. He tried to mod anyway, went bad.

[@Powaup]

All I need is the oil issue fixed and the ECU unlocked then we'll be good

[@BenMcNelly]

@@Powaup Awesome! did you know that our car does not come with footwell lights? it's 2:00 a.m. and I'm currently trying to figure out how to get to the fuse box in the front passenger side so I can install LEDs

[@swagsession1]

@@BenMcNelly yup European countries got the foot well lights but u.s did not 😖

[@tgshark1]

Key points here, all of our parents grew up without cats...next prove climat3 change is caused by cars...next you can easily put on defoulers to avoid a CEL on a catless dp....

[@trd_ftw]

Fast forward to 2023 and JB4's are every where. The stepping stone before going and getting a full tune! Not to mention the turn around time to unlock the ECU takes about a week, leaving you with out a car for that time.

[@chrisginoc]

As a 2023 6MT owner, I would rather do the Femto unlock for MHD or BM3. I've heard so many bad stories recently in reference to JB4.

[@trd_ftw]

@Chris G Full unlock are expensive and often leave your car unusable for about a week. Unlike the JB4 that will give you a quick little something while you build to bigger and better things. All stepping stones.

[@trd_ftw]

Not to mention a full unlock is about $2,500. Not everyone had those funds available off hand.

[@jafethgarcia4819]

@@trd_ftwThis is honestly the main thing! Hopefully they unlock it this year in the states

[@patthonsirilim5739]

Toyota GR Supra A91 AT 382hp HKS Hipermax Touring spring kit HKS Drop in Super Air filter HKS Super Turbo Muffler HKS CARBON BRACE Antigravity Lithium Car Battery Hawk perfromance Dtc 60 brake pads Goodridge Braided Brake Line Kit Motul 5.1 braking fluid xHP Transmission Tune Advan Racing GT forge wheels Michelin Pilot Sport Cup 2 The supra has always been a more then fast enough car for the road any more power and frankly it would be to fast to have fun in so my goal to make it a perfect car that you want to drive everyday and every chance il mainly focus mostly on handaling and the joy of driving a sports car should be capable of putting a smile on your face power aint everything there a reason why people love the mx5 or the cayman the only thing the supra needs improving in my oppinion is handaling.

[@Powaup]

Nice build!! Big turbos are fun on the freeway but yea I agree with your statement

[@jimmi567321]

You need o2 spacer bro.

[@Powaup]

I’ve heard of people getting spacers and still CEL so not sure if it’ll help. That said I’m gonna have to take the pipe off so might as well by some spacers for when I eventually put it back on. Thanks for the advice

[@anng6283]

Yeah, I think an o2 spacer would help cheat the ECU and would definitely pass inspection too.

[@jiachenqu9285]

Hi can you let me know which spacer is working for catless dp

[@angelsclasstime517]

I was interested until you said, carbon footprint,

[@TheRea1Truth]

I have jb4 since I can’t hack my fucking ecu. I LOVE Jb4. Get the best one

[@Powaup]

Nice to hear! Can you pick specific maps on the Jb4? Like have one with low torque?

[@KoukiSylvia]

Wtf you spoutin off about “environmental impact” on a catless vs catted dp?! 😂 bud, make car videos, save the bull shit.

[@589supra]

Such a sheep for saying that lmao I was dying laughing. This dude must have a photo of democrats on his wall