Hello everyone. I did my Yaris GR 2023 @ JRM Racing in Sweden (Stockholm). They did OPF-delete, Milltek exhaust, new intake from DO88 and then remapped the car with ECUtec. I got 323hp after the tune and the car pulled superhard in the top revs. The car worked perfect, I did the tune when the car was run in, maybe 2000km and sold the car with 10000km on it. I did several track days with not problem at all.
I know this thread is about tuning and ECUtec but im planing on buying the new Yaris GR and I will not tune it. The reason is that when i tuned my last one i didn´t know i would track it. But once I took it out on track then i was hooked, the car is designed to go on a track not to go and buy groceries or do roadtrips. And in the long therm my belif is that the small engine will last longer with original power. Especially if you are hammering it on the track.