GR Yaris (Gen 2) GR Yaris Mk2 (MY2024->)

[Duke]

Best i can tell you it varies based on a lot of things, temperature of the car, ambient temperature, speed of the car, gear of the car, i have seen it go up to 2 bar at times, usually tops out at something like 1.5-1.8 but i dont have it as my main screen usually. It takes a lot of things in consideration as it decides how much boost to provide on any given pull. But overall as a highway overtaking machine it is consistant and i dont have to worry at any given time that the Yaris might decide to not give enough,, and that is how far i care about this personally.

Yeah, as I understand it, in common with most modern engines, it has a torque target for any given throttle opening/gear/RPM/load/intake temp/etc. and will play with boost, throttle, fuelling, ignition advance and probably a hundred other things to deliver that if it can, most likely in a way that minimises emissions.

 

[Armijs]

Mine should feel more spirited soon, GPF delete coming in the following days. Sound comparison will also follow, Ulter Sport exhaust with and without GPF.

 

[Michael Knight]

Mine should feel more spirited soon, GPF delete coming in the following days. Sound comparison will also follow, Ulter Sport exhaust with and without GPF.

interested in hearing the results. My ulter with GPF has become better over time, maybe some wools have found their place in the silencer.

 

[Euge]

Mine should feel more spirited soon, GPF delete coming in the following days. Sound comparison will also follow, Ulter Sport exhaust with and without GPF.

That cold start will be loud my wife is already apologising to neighbours for my car with just the Ragazzon haha!

 

[Sterbo]

Il massimo che posso dirti è che varia in base a molte cose, temperatura dell'auto, temperatura ambiente, velocità dell'auto, marcia dell'auto, l'ho vista salire a 2 bar a volte, di solito raggiunge il massimo a circa 1,5-1,8 ma di solito non ce l'ho come schermata principale. Prende in considerazione molte cose perché decide quanta spinta fornire a ogni dato tiro. Ma nel complesso come macchina da sorpasso in autostrada è coerente e non devo preoccuparmi in nessun momento che la Yaris possa decidere di non dare abbastanza, ed è fino a questo che mi interessa personalmente.

the turbo pressure must be fairly constant… at full load it must give x… in fact I asked for the peak (which is generally in the “low” regimes and constant (usually you look at the pressure for example at 7000 rpm)… because in full boost it is x, at 7000 rpm it will certainly be less… but in those specific moments it will always be the same no matter what time you do it… logically the longer the gear the more precise it is

 

[Sterbo]

I dont know what you are comparing it to, but on not as sticky or wide summer tires of 205/50/17 compared to OEM 225/40/18, it seems as easy to turn as a regular Hybrid corolla, OEM tires i dont remember anymore, but i dont find it heavy to turn at all personally. If you put on some wide track or drag monstrosities then off course the steering wheel wont be as easy to turn.

I compare them to a seat leon with 225/40 18

 

[Michael Knight]

the turbo pressure must be fairly constant… at full load it must give x… in fact I asked for the peak (which is generally in the “low” regimes and constant (usually you look at the pressure for example at 7000 rpm)… because in full boost it is x, at 7000 rpm it will certainly be less… but in those specific moments it will always be the same no matter what time you do it… logically the longer the gear the more precise it is

with GR mk1 it varies quite a bit. but those figures reported are quite high compared to mk1. I'm seeing usually around 1.5-1.6 if car is willing to go, tapering to 1.1-1.2 near red line.
If its cold weather request is typically 0.1-0.2bar lower.

 

[Sterbo]

with GR mk1 it varies quite a bit. but those figures reported are quite high compared to mk1. I'm seeing usually around 1.5-1.6 if car is willing to go, tapering to 1.1-1.2 near red line.
If its cold weather request is typically 0.1-0.2bar lower.

so when it's cold you see lower pressures? anyway yes I'm looking for that info but on mk2, I think someone will have looked at it

 

[Sam]

so when it's cold you see lower pressures

yep, 1.0-1.2 bar in cold weather, most I've seen in 30c outside temp is 1.6bar or so.

The ECU will vary boost to achieve the needed airflow to deliver the torque being demanded. Air is less dense when hot so more boost to get the same airflow, air is denser when cold so less boost to get the same airflow.

 

[Sterbo]

However I saw a video where the mk2 does about 1.7-1.8

 

[Onehp]

yep, 1.0-1.2 bar in cold weather, most I've seen in 30c outside temp is 1.6bar or so.

The ECU will vary boost to achieve the needed airflow to deliver the torque being demanded. Air is less dense when hot so more boost to get the same airflow, air is denser when cold so less boost to get the same airflow.

More specific, same mass flow. Airflow into the engine is always the more or less the same, i.e. displacement, but different pressures needed at different temperatures to achieve the same mass flow.

 

[6mt]

A good overview of the MK2 RC.

 

[GRnewb]

Why isn’t imt standard on all manual cars? It’s so good and addictive

 

[GottGry]

Why isn’t imt standard on all manual cars? It’s so good and addictive

yes, it's a nice feature that I thought I was never going to use ...now always

 

[6mt]

iMT is awesome.

I’m pretty old-school, and I’ll admit there’s a certain satisfaction in rev-matching manually. But the reality is this: if you care about the longevity of your clutch and drivetrain components, the computer simply does it better. It’s far more precise and consistent than even the best human—iMT nails it with 99% accuracy every time, whereas I might hit 80% on a good day.

Sure, I occasionally turn it off when I want a bit more involvement, but iMT is nearly flawless. It enhances the driving experience rather than taking away from it.

 

[Duke]

Yes, iMT really is superb.

I think the only people who will complain about it are the type who change gear like they’re in The Fast & The Furious.

My advice? Do not buy a GR Yaris from someone who says ‘iMT is crap’ or ‘I never used it’

 

[Ono]

I completely agree, a really nice feature. Even when you try to do it yourself, you can keep it on as the computer will not add gas if you're in the right range.
That's what I do and I'm learning how to without burning my clutch !

 

[Sam]

I have iMT on by default now after initially not using it, but I do find it sometimes a bit slow to react so for me it's more of an assistant rather than taking over rev matching fully.

I'll still blip the throttle, iMT handles putting the RPM where it needs to be after my initial stab.

 

[Kaxe]

Yes, iMT really is superb.

I think the only people who will complain about it are the type who change gear like they’re in The Fast & The Furious.

My advice? Do not buy a GR Yaris from someone who says ‘iMT is crap’ or ‘I never used it’

Yeahhh hold up, my car lurches forward when you're slowing in traffic with iMT ON so it's only useful/good when you're really pushing on. No use being ON all the time...

 

[Duke]

Yeahhh hold up, my car lurches forward when you're slowing in traffic with iMT ON so it's only useful/good when you're really pushing on. No use being ON all the time...

Never had that happen