GR Corolla - How Much Power Does Tuning Make - EP1

The GR Corolla and Yaris twins are powered by a 1.6L 3 cylinder turbo direct and port injected engine! That's a mouthful! What we want to do is what these little punch above their weight powerplants have packed under the skin. Can we make more power with tuning - and if so how much?
We walk you thought the tuning and flashing process of the cars (using EcuTek) and I think you'll be impressed with the results. We certainly were!
Car build by AJ Racing: aj-racing.com
Dyno tuning:
www.stratifiedauto.com/index....
Enjoy!
For tuning inquiries:
www.stratifiedauto.com
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0:00 Intro
2:37 ECU Flash
5:44 Tuning Time
7:19 Dyno Results
13:28 Driving & Conclustion
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#grcorolla #gryaris #dynotune #stratifiedtuned #stratifiedauto

[@Dan_AYP]

This is a crazy gain on a 1.6 3 cylinder

[@stratifiedauto]

Definitely impressive!

[@JorgeCabrera-zh7yr]

It's a 3 cylinder but with some big ass pistons so don't let it foul you just because it's a 3 cylinder

[@mez6256]

@@JorgeCabrera-zh7yrstill 1.6😂

[@aarons2613]

Compound turbo any small liter and just let the pump dump fuel and you’ll be surprised what compressed air and the correct amount of fuel for said air can do

[@brandon9491]

@@JorgeCabrera-zh7yr1.6/3=.53L per cylinder so really not that big considering an sti is 2.5l 4 cylinder

[@JordieG8]

That looks like a fun platform. Well worth the extra work considering the flashing procedure!

[@stratifiedauto]

It should get better soon.

[@adamrobertorr9019]

Amazing - can’t wait to see more!!

[@amdstrollo3074]

That was impressive! Cheers from Ontario :)

[@stratifiedauto]

Thank you!

[@ryanb.4994]

Alex’s tuning skills are second to none. He has tuned two different engines and platforms for me (Fiesta ST with “big turbo” plus my current stage 2 VA WRX) and my WRX has been running FLAWLESSLY for 86k miles post Alex’s 93 octane tune. I sold the Fiesta ST but it was running great too as long as I owned it. I won’t hesitate to work with Alex on my next car, and who knows it could be a GR Corolla?

[@stratifiedauto]

Thank you Ryan and looking forward to working with you on your next project!

[@ryanb.4994]

@@stratifiedauto Sad update, and my 2019 WRX was destroyed by a tree that fell during the recent May 16 windstorm in Houston, TX. I am strongly leaning toward another new WRX. I deleted Facebook messenger (how we communicated in the past) and I will be reaching out via email for your thoughts on the FA24DIT and what you my recommend for a “basic” tuning path. I’m thinking very basic with TMIC, intake, CBE, and 93 octane Stratified pro-tune. “Conservative” and tuned for reliability above all out performance since I want to maximize longevity. Thanks in advance and I look forward to working with you again.

[@januaryandon2]

Really informative video, thanks for sharing!

[@stratifiedauto]

Thank you!

[@vr4junkie385]

I love how the left it right out in the open like do ur thing we know we know

[@Conrad711]

Fun car! I have one and I am curious if you can tune the exhaust valve activation point, kind of annoying at idle/less than 30kph.

[@stratifiedauto]

Shouldn’t be a problem to dial this in.

[@raymondfrank9202]

good one

[@stratifiedauto]

Thank you!

[@cot998]

The way the boost was acting reminded me of a decently sized engine with a small turbo and a manual boost controler.

[@stratifiedauto]

For the 3 cylinder that turbo is actually a good size and makes a good amount of power.

[@not12listen]

"At least 5kph over the speed limit" best line of the entire video. :) I'm going to request something. Could we also get the torque curve before and after the tune? And, how about the tune with the factory intake?

[@stratifiedauto]

The torque curve is there for the stock tune. However this was all done with the intake. No runs with stock air box.

[@kevinpereira1624]

What size are the wheels 👀

[@Lairex_Rai]

that's just crazy almost 65 horsepower with e30 mix over premium, that's just bonkers. I would love to get a tune like that for my Gr but also able to tune it back to stock when ever. thats super cool. I see that car has had a lot of modifications would love to see what the numbers would be with the stock air box would really be.

[@stratifiedauto]

We will have at home flashing soon!

[@servalkorion686]

@@stratifiedauto can't wait!

[@indcline]

​@stratifiedauto how long will it take you all to come up with the at home flashing?

[@jdbyrd84]

​@@stratifiedauto what hardware would be necessary for that to happen? Ecutech?

[@iJakku]

With just an intake? Holy crap that's awesome! Would fbo be enough to get close to 400 whp on pump gas?

[@stratifiedauto]

We will find out just how much individual flow modifications add.

[@CSHracer]

No, not even close. Probably not even e30. And at those power levels and RPM you also start getting valve float, so valve work and probably head studs are required.

[@OldManShoutsAtClouds]

​@@CSHracernot really... depends entirely on the springs... the vw 1.8t only needs exhaust valves past 400chp because they'll burn up, but you don't need springs and retainers until you've passed like 500chp.

[@halorita]

@@OldManShoutsAtCloudsit’s already been documented that the stock springs on the GRC have experience valve float at around 320hp, nemtec racing

[@OldManShoutsAtClouds]

@@halorita my bad, was thinking of an entirely different engine.

[@shineonu70]

Curious on the stock torque result, pump, and ethanol figures on your tune ?

[@stratifiedauto]

We have these in all the graphs we show in the video.

[@shineonu70]

Ah, ok thanks

[@JP-xp4om]

Is that shift knob also available on your website?

[@stratifiedauto]

Not at the moment yet. The tunes are though. www.stratifiedauto.com/index.php?main_page=product_info&cPath=358&products_id=1160

[@JP-xp4om]

@@stratifiedauto what is it called?

[@calebflora9304]

I’m curious to see the engine-lifespan and reliability of this tune. That’d be crazy gains if the engine still lasts long-term

[@stratifiedauto]

Most modern turbo engines are happy with 30-50% power over stock long term.

[@lilripsta911]

can we run e85 on the stock fuel system? looking forward for more content on the GR Corolla.

[@stratifiedauto]

It would be tight on the stock injectors. But the port injectors are easy to upgrade.

[@TheRealMax77]

is it possible to do a full e85 tune with stock injectors and stock low pressure fuel pump?

[@stratifiedauto]

We will find out soon. E50 is about sweet spot for power.

[@TheRealMax77]

@@stratifiedautoMy reasoning for e85 is just so I don't have to play with the mixing to make e30 or e50. Thank you for taking the time to reply to my question.

[@stratifiedauto]

Fair point. We should be able to test this shortly. If it needs more fuel it’s nice that this car has port injectors we can easily swap and upgrade.

[@1InfinityShade]

Hold up bro, I've been calling it the Grolla for months. Nissan may have Godzilla, but Toyota has King Kong. AKA Grolla.

[@stratifiedauto]

It rolls right off the tongue!

[@1InfinityShade]

@@stratifiedauto Yeah. I actually changed my Insta handle because of how good it is lol

[@tinhinnh]

the simple center dash reminds me of Evo 8’s

[@stratifiedauto]

I love simple and focused.

[@cappinteddy3228]

What sort of cost can be expected for a full tune like this?

[@stratifiedauto]

Here is the tune package. www.stratifiedauto.com/index.php?main_page=product_info&cPath=358&products_id=1160

[@techmodifieddotcom]

those advans look incredible on this corolla. I spotted a GRC for the first time yesterday, looked like a corolla hatchback until I heard the blow off valve.

[@stratifiedauto]

The car looks hot I agree!

[@Carlos.Rivera]

Numbers will be higher if you put FWD instead AWD

[@indcline]

I think the GR corolla is supposed to be dynoed in front wheel drive. The all wheel drive system regulates power. The car will shut the rear wheels off anytime with the Ebrake on. In dyno mode, rear drive shaft our and ebrake on for consistency. Just what I have read in my research.

[@stratifiedauto]

We did the pedal dance. We also tried it in and mode. Not much of a difference to tell you the truth. At higher speeds with no slip it will not engage the clutch packs much or it won’t be stable. Similar to focus RS.

[@indcline]

@stratifiedauto thanks for the explanation. Excited to see how you dial it up

[@stratifiedauto]

More to come!

[@mercywing2]

I cannot wait for map switching on ecutek

[@stratifiedauto]

And for easy remote flashing!

[@MrKeg830]

Will be interested to see when valve float hits

[@stratifiedauto]

I haven't experienced valve float during the testing on this car - I have experienced it on others and you start to see misfires. Valve float however is a function of RPM and backpressure. Keep redline reasonable and be aware of boost levels. However boost is not the only way to make power. The gains from E30 are made without much increase in boost or back pressure. A lot of it is from the increase in efficiency from timing and fueling changes.

[@januaryandon2]

Im really interested in the back pressure situation with this car. Toyota in their marketing explained that the "unique" exhaust setup of the GR Corolla is for the backpressure issues they faced when pushing the 1.6 -- I am currently looking at almost straight piping mine. Could you expand more on that in relation to valve float? @@stratifiedauto

[@zachmullins9444]

I'm confused why you believe the boost gauge fluctuating with the gas pedal / throttle body is in your mind the hallmark of a good tune. It's going to fluctuate whether the tune is good or not. I would be much more concerned about the air to fuel ratio and the kr than anything else. But hey, the visual makes for a nice video ;)

[@stratifiedauto]

What I was showing there which is hard to capture on camera is how boost responds to different levels of throttle input. It should be responsive and not oscillate.

[@TheRealCatof]

I think the better question is how many months until the engine blows?

[@stratifiedauto]

It will last a long time at this power level. Not too worried.

[@slicksloth5399]

What wheels are those?

[@nawmean]

Advan GT

[@Slavtic]

I've seen a few of these in the wild, but dealers say they're unavailable. I'm sure the mark up is crazy.

[@stratifiedauto]

In our area they can now be had at msrp. Check around with dealers.

[@Carlos.Rivera]

My local want $50k

[@VS666]

western WA has 2 or 3 right now under 50k

[@stratifiedauto]

Cars are sitting on lots so prices will come down.

[@adriancuevas1587]

Ecutek recently released their phone flash didnt they?

[@stratifiedauto]

Yes this is what we’re now using.

[@mhk67091]

What about valve float any issues with that

[@stratifiedauto]

We haven’t ran into it. Will be pushing more to get to the point this becomes an issue.

[@havok8570]

23% power increase with an e30 blend is nuts. 350 hp is very respectable.

[@stratifiedauto]

Definitely the car moves very nicely at this power level.

[@jdmteggy2388]

U can run the e30 tune on th stock gr Carolla?

[@stratifiedauto]

Yessir!

[@jdmteggy2388]

@@stratifiedauto when will the tunes be available

[@stratifiedauto]

Right now if you bring the car in. Because it has to be flashed externally the car has to come into our dyno or ECU must be mailed out.

[@doorkicker8507]

Love to see on E85

[@stratifiedauto]

Past e40-e50 it’s unlikely to make more power

[@tavariscusic9284]

So the car is basically stock besides a tune?

[@stratifiedauto]

And an intake power wise

[@martobatista9964]

Can I get a link to your website?

[@stratifiedauto]

Here it is: www.stratifiedauto.com

[@someguynic]

Valve springs next.

[@stratifiedauto]

Haven’t seen issues so far.

[@tonydeangelis995]

Can it run full E85?

[@stratifiedauto]

With both port and direct injection you have the fueling in place for it.

[@cflip2x]

Well time to update this video 😅

[@stratifiedauto]

We will have remote flash tuning live tomorrow on our website so no more cable needed. The rest still applies :)

[@kreazyd]

I wonder how long these engines will last? Only time and miles will tell.

[@stratifiedauto]

Yes nothing beats experience and real world testing.

[@mogulme6190]

I mean I’d expect good things out of a Toyota

[@SethKnows]

This platform has been around for a while in Japan, I'm sure it's great

[@romper4444]

Man that engine bay looks like total spaghetti monster crapola. Sure miss the days of a clean b series honda engine bay. At least the type r kinda looks ok for modern times

[@stratifiedauto]

I agree. The modern engine bay is not as clean. A lot of sensors actuators wires and tubes. But they perform well

[@JorJorBinks123]

Holy echomole!

[@stratifiedauto]

Yarismole

[@JorJorBinks123]

@@stratifiedauto Camrymole

[@stratifiedauto]

I grew up with the Tercel!

[@JorJorBinks123]

@@stratifiedauto Trecelmolé!

[@BpgaMusic]

lmao the grrrrrrrrrr

[@user-ln5bs5jo9k]

Folks in Australia called Powertune Australia made 770hp on the gr yaris with just cams and valvesprings, but they did use some nitros. Other than that, the engine was stock bottom end... that's crazy. They live streamed the tuning process, too, and did many pulls. They said they will post more about it soon on ig and bring it to the 1/4mile

[@stratifiedauto]

That’s a lot of power. On our dyno to make that power you would be spaying a 300+ shot of nitrous.

[@cybasmuggla3697]

​@@stratifiedautoThe GR Yaris was fitted with an upgraded head gasket, along with uprated head studs. Elsewhere, the intercooler was swapped out for an aftermarket version from Plazmaman, while the three-cylinder benefits from a Garrett G30-770 turbo. Powertune Australia has also fitted a turbo exhaust manifold, intercooler piping, and a dump pipe from Golebys Parts. A MoTec Yaris Plug-in ECU also forms part of the package. 2,200cc Secondary Injectors from Bosch replace the stock items. The Yaris also receives an Elixr Brushless fuel pump and a cat-back Akrapovic exhaust system. But that's not all. Even the gearbox has been replaced with a six-speed sequential transmission from X-Shift and mated to an ATS Triple Carbon clutch. Interestingly, Powertune Australia has decided to retain the stock rods, crank, and pistons. "We have pulled numerous engines down, and after doing a lot of comparisons and measurements, we believed we could make our target power with the stock items," said a company

[@cybasmuggla3697]

How do you mess up info so badly? It uses a lot more than just cams champ and doesnt mention nos.

[@stratifiedauto]

How is the powerband with that very larger turbo? It must come on fairly late on the 1.6.

[@CSHracer]

@@stratifiedauto The zero to full boost in just 4.5 seconds! haha

[@alejandrocruz-ce9ho]

That bumpy graph on pump gas tho 😬

[@stratifiedauto]

Look at the stock tune!

[@aikensbrown866]

What a guy could talk.

[@stratifiedauto]

Yas!

[@aarons2613]

Compound turbo it I bet you could push 450 wheels before it blows

[@alsharjishwain2170]

This car in Stock is basically 250hp. The 300hp is a marketing term.

[@lionflame4890]

It does make 300 engine hp. Manufacturers don't measure whp

[@stratifiedauto]

This is correct. It is around the 250whp mark on a dyno. Similar to an STI which was also rated at 300.

[@beretta8633]

So they underrated the hp ? Wow.

[@stratifiedauto]

Keep in mind this car had an intake on it already. The hp falls in line with that we see from modern turbo cars. The little motor is a strong performer!

[@user-ez6sm5lb6t]

Is it new???? I would imagine the gr yaris tunes are 95% the same... they already proved 500whp is reliable.

[@stratifiedauto]

Use case scenarios will affect reliability. However at the power level in the video the car will be happy for a very long time.

[@user-ez6sm5lb6t]

@@stratifiedauto Your honestly not even stressing the motor at that level. I was not saying go to 500whp... those are the people really pushing the platform but 450whp would be fine. That was also 500hp on the older one. Toyota has made this platform stronger since then because their CEO races the car and breaks it with the engineers watching and your going to quickly fix and improve your CEOs car when it breaks.

[@stratifiedauto]

I look forward to a bright future for this platform.

[@weroliera]

For me the gains are too low I rather have stock and more reliable. 🤷‍♂️

[@stratifiedauto]

Cars with bolt ons and tune like this are very reliable.

[@Mr20564]

Head gasket will go out

[@stratifiedauto]

Hasn’t so far. Nor does it look to be a common issue.

[@DirtE30]

Who takes the air bag out of a brand new modern vehicle? If it’s a track car only that’s one thing but dude…

[@romper4444]

Unnecessary weight bro

[@phoneaccount206]

Someone needs extra cushion when they crash? You must sit down to pee.

[@igor-rp5mw]

It is all fun until it blows up or rear end overheats.

[@UnstoppableMileage]

The rear end overheats because the sensor is right next to the exhaust they already fixed that with $10 heat wrap

[@CSHracer]

@@UnstoppableMileage That doesn't fix it. People have tried several things, that does help, but with agressive tracking, you need more than some heat tape. That said, the number of people pushing the car hard enough to cause the diff to over heat is very small and if they are pushing it that hard, they will likely be OK dealing with the over heating.

[@Rs3mocha]

would not trust a 3 cyl to not blow up

[@stratifiedauto]

I would say the number of cylinders has little to do with that when well tuned and maintained.

[@rob_nice1]

I would never pop that hood. That motor looks like 💩

[@buddah13]

god thats an ugly car

[@stratifiedauto]

Beauty is in the eye of the beholder.

[@AH-vt8gv]

Compared to what? The fugly mk8

[@JacesOwnWorld]

Just buy a Golf R people, and watch yourself absolutely destroy this tiny GRC in every single category, and save yourself money too.

[@stratifiedauto]

Being in this industry long enough and having run setup and tuned pretty much every vehicle in this category I can tell you that each has unique characteristics that the owners enjoy. We help make them all better.

[@no_regretz2393]

No one wants vw unreliability. They're flat out junk. And not to mention 2x the cost to mod.

[@curveofsound]

No manual no care and I've owned multiple vws

[@AH-vt8gv]

VW is junk. Former mk6r owner, and plus a bunch of different generation gtis. Why don't you light up a manual r, versus this car? Mods for mod, the GRC beats the F out of it

[@andrewverrett568]

Yeah and when it breaks and the parts cost you 3 times as much on the vw as the toyota cost.... Trust me i had a golf and when the engine blew i was shocked how much it cost to fix. Might as well buy a entirely new car, which is what i did. Toyotas have always been cheaper to work on.

[@user-or4oj8bc1b]

Waste my life...

[@stratifiedauto]

Don’t do that

[@Marshallbuttholeman]

That must be an incredible factory turbo to produce those numbers even on ethanol

[@stratifiedauto]

It’s well sized for this power level.

[@jaxxone4907]

Stock turbo and spools like a big turbo compared to mk7 platform. Too small of an engine

[@stratifiedauto]

It is a 1.6. It’s spunky though.

[@StopTargetingOurKids]

Awesome video and car, except those wheels lol

[@stratifiedauto]

Some like them some don’t.

[@StopTargetingOurKids]

@@stratifiedauto wife has the same wheels in bronze on her wrx 😆