Quote Originally Posted by bluegtp91 View Post
Somewhere along the way you read VERY wrong. So your telling me putting ported/polished heads on a FI car isn't going to make a difference?

Get real.
Im saying the gains arent worth the trouble.. and if you go too far even slightly you decrease power. Overall, even porting the heads a little will net you worse mpg and off WOT power. Yes it does give you more overall flow but sometimes that isnt the best thing. Like i said before, smoothing the inlet and polishing the exhaust runners/ combustion chamber is the farthest i would go.