Originally Posted by HighPSI TSi Guy
my red car hasn't seen unleaded gas since a year ago, and it's fine. it LOVES the lead
i couldn't get sunoco 110 to knock if i tried.. pump gas is just liquid detonation IMO

How much timing w/ how much boost?
I have ran 33 degress @ 35psi w/ a T61 on C-16 and the motor loved it.
With pump gas and the same turbo I could run 18 deg @ 22psi with no knock. I agree pump gas is dangerous at elevated boost levels and race fuel is worth the power increase if you can utilize it with a proper tune.