GR Yaris Looking out for those with high horse power
- Thread starter GZZ000
- Start date
Michael Knight
Totally Hooked
good intro to content here is Members section where you can find personal build threads. Where you're located maybe helps you pointing out good service reps.
Great car. Congrats . Suggest you keep it standard for a period to find what you like, dislike before spending a Motza on what is already a brilliant car !
As Michael Knight suggests there are fascinating threads to follow and learn what not to do ! Learning its foibles is worth the time . All the best , from an old geyser !
Altocumulus
Dedicated member
- Jul 16, 2024
- 141
- 235
You can build an 800 HP engine for drags/time attack quite easily, but it will hardly be street drivable.
Or you can tune to 360 HP on the stock turbo and have a very capable daily/track combo.
It all depends what you're after, how far you're willing to go, the sacrifices you can live with and budget.
Sekred
Totally Hooked
- Dec 18, 2021
- 439
- 568
Well all-out is about 1000 HP. Big Garrett turbo, no boost under 5000rpm, sequential transmission to start with. There's probably 40k at least.
Hardly street legal too and slow in the traffic.
You probably need to be more specific when you say, "all out".
If your in NSW go to Lamspeed.
Hardly street legal too and slow in the traffic.
You probably need to be more specific when you say, "all out".
If your in NSW go to Lamspeed.
- Dec 27, 2021
- 1,707
- 2,840
Yeah, most people stick with the factory turbo which maxes out at around 350 hp (flywheel 
) but even mild mods to get north of 300 hp results in a completely different animal to the stock car despite the relatively modest hike in power. I sometimes switch back to the factory map and think "is that it?!" despite being happy with it at the time 
Changing the turbo is a huge step-up in expense as it really needs an aftermarket ECU and a few other mods (valve springs, cams, injectors etc.) to unlock the extra power it can bring.
There are a few brave souls who have done that though, although I often see the same thing that happens whenever people chase big numbers with cars; they get bored and sell on, or it becomes so hardcore it rarely gets used or pretty much turns into a track-only thing.
If you're interested in the upgrade paths possible, @Phil1291 did a great video on what to steps you can take to get to 500 hp.
) but even mild mods to get north of 300 hp results in a completely different animal to the stock car despite the relatively modest hike in power. I sometimes switch back to the factory map and think "is that it?!" despite being happy with it at the time Changing the turbo is a huge step-up in expense as it really needs an aftermarket ECU and a few other mods (valve springs, cams, injectors etc.) to unlock the extra power it can bring.
There are a few brave souls who have done that though, although I often see the same thing that happens whenever people chase big numbers with cars; they get bored and sell on, or it becomes so hardcore it rarely gets used or pretty much turns into a track-only thing.
If you're interested in the upgrade paths possible, @Phil1291 did a great video on what to steps you can take to get to 500 hp.
There are some really interesting findings emerging from those brave folks running bigger turbos on 100% stock motors. The implications of which point to many of the common issues introduced (e.g. big hits of torque and exhaust side pressure) are simply symptoms of 'maxing out' the stock turbo. Damaged clutches and gearboxes from peak torque at 2.5k rpm and floating valves from massive exhaust back pressure go away with a higher flowing turbine spooling later.
- Dec 27, 2021
- 1,707
- 2,840
Oh absolutely, but the cost is huge for that peace of mind.
Personally, I wouldn't want to run the stock turbo near its maximum but I get why people do.
This is my point, a totally different tuning approach for the Yaris at much lower cost to get to the same 300 wheel horse power as a maxed out OEM turbo on standalone ECU, could just be, big turbo on Ecutek at conservative boost!
ksc
Absorbed member
- Dec 16, 2021
- 47
- 43
Not to mention a sequential's service requirements.
