Well a perfectly tuned turboed l26 that was stock other then the turbo kit just blew a piston with zero knock. The l32/l26s don't have a rounded edge around the piston heads and get really hot, the ring expands and gets stuck then piston head pops...or something like that. His afr was spot on too.

I'm not saying that aren't exceptions, there's been plenty of people that have a done a 3.4 setup without a tune and haven't ever had a problem. Or they didn't own the car long enough lol.

I just wanted to point out thats there's always talk about knock but hardly any talk about afr.