Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
If you push an IS38 hard enough you can shit a rod. So technically any time you push a motor it wouldn't be a bad idea to have it built beforehand. It's all about how much risk you want to take. Quite a few of us run hybrids on E85 on stock motors. Some pop quick some never pop. Luck of the draw, tuning, driving style, maintenance, etc... all play a part.