Im happing with it for my DD it look sporty and goes like a son of a b*tch!! Still need to dial in the tune with the 3.2 on it now. So far Im at 15* with 2 degrees of knock from 4400 to 5000rpm I may go back to the 3.4 at 18*no knock if it gets worse and I can get it down when the weather heats up.