GR Corolla Eventuri Intake Dyno Testing 

Personally we really like the white color. It’s sharp.

Can't they just tune the stock box valve to open sooner

Yeah people saidd that….on twitters. 🤦‍♂️

Agree. If you don't like a car in white then you just don't like it how it looks period

@@nah3193 You know, I'm not sure I ever thought of it that way, but now that you bring it up, you're right!

Check out the new video we just publish! The exhaust note changes even more :)

Thanks! We're planning to do more of these types of videos and some vlogging style videos as well so stay tuned!

From my testing, the intake temps stay pretty good until the flap opens and they rise up quite a bit so to me, it seems to be pulling in hot air and it never comes back down until after the flap closes. I know there's various reasons for this to exist but that's the real world impact we are seeing in our testing.

That would imply there would be positive pressure in the air box, impossible. You also should know hot air rises....lol. What you're saying makes zero physical sense.

@@Perceivedshift it actually could work if the aero was correct, but inside the engine bay I doubt that it works. Think air operated brake bleeder. Forces brake fluid out of the system by creating a vacuum with the air rushing by. So it could work if they had forced air rushing by to keep the hot air out. He needs to get the readings while the car is driving vs sitting still on the dyno to get real use Temps. I think the new intake will still win though. Looks nice too.

@@boostedperformance_small turbos do that. You should prove your claim before you broadcast it.

@@BrodeyDoverosx I don't follow - what are you saying that small turbos do? Let me know and I'll share any knowledge I have on it or can certainly do some testing and collect some data! Believe me, I am all about having and sharing the right information, personally, I don't care about being "right", I care about being "correct" in things I share. :)

That's the plan!

Yeah - the ricer in me loves it! From in the cabin you can hear the turbo and blow off valve back through the intake. It sounds awesome.

For primarily street use, the WRX for sure but if I wanted to track the car a lot, I would go for the GR Corolla. Both are awesome cars but I feel the WRX is more suited to street use and the extra power is nice but the GR Corolla is still very peppy so it can easily be enjoyed as a primary street car too.

​@@boostedperformance_i think its hilarious to have a car literally with world rally in its title to be not a streetable vehicle but the corolla is a better track vehicle its bonkers lmao

​@@quacko11 Yeah... the WRX has changed A LOT since its inception. I miss my 2005 STi a lot and still really enjoy our STi swapped 2.5 RS. The GR Corolla reminds me of the older Subarus in a good way!

Yeah! I think we could do that! We have a 2023 VB WRX just sitting here ready for some testing as soon as Cobb has support for it!

We are using Ecutek with our shop car and will be offering tuning as well. Right now, we have to flash directly at the ECU each time we want to make a change but we can log with the Bluetooth dongle with the Ecutek connect smart phone app as well as monitor. We should have either direct OBD laptop flashing and/or PhoneFlash support ecutek in the near future and that's when we can roll out remote tuning. For now, we can tune cars in person at our Des Moines location or in Chicago at Limit +1 where they are located.

You sure can! That is part of what we tested. The fueling remains the same as stock so it keeps the engine running safely. We haven't tested adding a down-pipe yet as there really aren't too many options available yet but we'll test as they become available.

It’s in beta testing right now. We are actually starting to offer some in person tuning for certain folks who are interested. Once it gets out of beta and has remote tuning capabilities we will offer it that way. If you happen to be near us or the Chicago area, reach out about in person tuning if you are interested.

We did do the comparison runs with the hood closed. You are correct that this is the the proper way to test. The last pull with the hood open was just to hear the sound and I’d flashed it with a higher boost tune at that point. We have gained 60 whp so with this intake and tuning. Tuning is huge for these cars and the intake really shines at that point. :)

@@boostedperformance_ the sound wooooosh woooooosh 🙏

You sure can! That is part of what we tested. The fueling remains the same as stock so it keeps the engine running safely.

It works just fine on the stock tune. The ecu will close the throttle a bit but you don’t really feel it

We’ve tested all different ways and on the dynojet it reads the same power in or out of dyno mode and using 2WD or 4WD. We have a linked dyno so we don’t have issues using 4WD. The other benefit to using 4WD on a dynojet is putting more load on the engine, closer to what you’d see on the road since the car puts power to all four wheels.

Yes, basically we need to raise the boost/airflow/load/torque limits and then we are good!

SAE is generally about 2% lower than STD. Next time we do anything on the dyno, I will include both. Customers typically don't care about the difference and ask for whatever will show the highest number so we we provide that but we use the same correction for base line and final numbers to so the correct gain. Which correction is used is not nearly as important as doing that and also use one of the corrections in general.

@@boostedperformance_ people want to brag about how much hp they got, especially when dynos can be manipulated. I want to see the power under the curve; the VE is what I care about when it comes to tuning.

@@touayaaj84 I could not agree more! We do not tune a peak number, we very much tune for area under curve, smoothness, and longevity before anything else. We respect the limits of a given setup and leave some margin in the tuning to handle hard use since they dyno testing puts the car into very favorable conditions compared to say road course use for 15-20 minute sessions.

We are based out of Des Moines, IA but we tune monthly in the Chicago area. You can get tuned by us out there in person through Limit +1

@@boostedperformance_ can u tell me which location to go to in Illinois?

Wheel numbers vs factory crank numbers just like anything on a dyno. That's power on the ground after all the drivetrain loses.

@@carlstrohm3785 Thanks for the explanation. I appreciate it.

@@cbschrader Yup - to be honest, the engine power is under rated for sure! A 2021 Subaru STi for example is rated at 305 whp and puts down 240-245 whp on our dyno stock. The GR Corolla puts down about 270 whp average on a dynojet so that means its really putting out closer to 320-335 at the crank now. Having owned a 2017 Golf R for a while that has now turned into an Audi RS3, I can 100% tell you that you'd love the car coming from the GTI. I enjoy driving it more than the RS3 lol. You'd be gaining AWD and a really fun, nimble chassis.

@@boostedperformance_ Sweet, thanks for the reply and for the info. If I do end up getting it, I’m 100% set on the 2024 Circuit Edition whenever that comes out. Oh, and I’m not paying a dime above MSRP. I live in Florida and I don’t think there is a single dealer in the state that sells at MSRP. They’re out there though and I’m down for a road trip!

@@cbschrader you're welcome! Yeah, be patient and wait for MSRP, it will come. These cars are awesome but not worth paying a bunch of mark up on, with the popularity Toyota is seeing, they will ramp up production to meet demand.

The dump flap opens into the engine bay so it actually pulls in air that is hotter than the ambient temp. The Eventuri Intake is always drawing in air from the front of the car that is at the ambient temp.

Thanks! The plan is to circle back around and do some Subaru content but the GR Corolla is the new hot hatch everyone wants to check out so we started there. :)

Ive definitely had my fair share of EJs but i dont think any ej can come close to the G16E GTS

You sure can. Where are you located?

The last pull was just to hear the intake sound. It wasn’t included in the results. I had also flashed a tune on that made an extra 55 whp so definitely not fair either. :)

Both! It doesn’t change peak torque but it adds torque where power is being added since they rise together.

If you want to get technical, it is all torque based. HP is just a made up number. HP = (Torque×RPM)÷5252. So the more torque you make, and the faster you spin at that number, the more HP you get. I'm just saying...

All the test runs were done with the hood closed. We just filmed some with it open to hear it better.

thanks @@boostedperformance_

I was wearing the mic….

300 is rated at the crank, 266 is what gets to the wheels after drivetrain loss.

Any modifications to the engine, ecu, drivetrain, etc can potentially allow the manufacture to deny a warranty claim. This is has been the case for a long time. Before modding, its best to establish a good relationship with a dealer you trust and make sure they are mod friendly and if not, keep your car stock until you are out of warranty unless you are willing to risk paying out of pocket there is an issue they wont cover.

We actually have the ability to see all the temperatures right now with Ecutek. We can see ambient temp, intake air temp (where the MAF sensor is) and pre throttle temp (after the air is compressed and cooled by the intercooler). So I was actually to measure and record all these temperatures with the stock intake vs Eventuri. The stock air box truly DOES bring it hotter air than ambient temps because it pulls from behind the radiator. This isn't a guess or a theory, I can see it in the data both on the dyno AND my importantly when driving on the road.

It’s not ideal no but it happens on the stock tune with a stock intake also. The ECU frequently closes the throttle at points and that’s what you are hearing in the video. It’s easier to hear it with the Eventuri intake.

Stock 300hp. Modded to 400-450 should be pretty good.

I wonder if they can get 600 hp eventually. That’s what Koeniggseg allegedly get from their 3 cylinder

Yeah for sure. If you are cross shopping these cars against a GR Supra, RS3, Turbo I6 BMW or even honestly the Golf R, S3, VB WRX, etc, you might not be able to get the end result of power you want out of it but that's not really the point of this car IMO. This car is perfect for folks who want to do road racing, autocross, or just want a quick, fun street car where power isn't the main focus but rather having a balance of handling and power is more important. That said, the power this little 1.6l 3 cylinder can make is silly. If Toyota did take this engine concept and double it into a 3.2l 6 cylinder, it would be rowdy for sure.

Why would you want a 800hp gr corolla?

why would you want 800+hp?? It's too much. More isn't better here

Yup! Depending how you look at things, its either a really great price for an amazingly well crafted CF intake or its way too much money when you can buy a much less expensive intake that gets the job done in the performance department. All I know is they selling out fast and everyone buying them has been loving them. :)

@@boostedperformance_ ECU / Tune would be better value, but more power to those who want to spend that kind of money for one.

@@apex_gr You aren't wrong! We are gaining more power from just our tuning than any single mod but we are finding that upgraded the intake along with tuning is a nice jump in power so there's extra value in adding an intake with a tune. That doesn't mean you need to use THIS intake but upgraded the intake is valuable!

Absolutely. It’s not for everyone. Part of what you are paying for is the style and some people don’t want or need that. It does perform extremely well but other intakes can offer similar performance of course.

On GR Yaris testing MST and very similar to this. Many of us in Australia run MST, because cheap and run by Lamspeed here in Sydney

Becuase horsepower is not the only figure when it comes to a car look at the hellcat has a shit ton of horsepower but will get its ass handed to it against a miata with 1/5th the hp in autocross. This is a factory rallycar you can literally take ot off the showroom floor break it in and participate in the north american rally ask me how i know.