Mar 3, 2009 #1 B bob1 Active member Joined May 12, 2008 Messages 1,779 Reaction score 0 Points 36 If I put a after market turbo in that is capable of pushing lets say 40psi, What is the max push that stock STi Heads could take (2005)? And How would I go about making them be able to take more?
If I put a after market turbo in that is capable of pushing lets say 40psi, What is the max push that stock STi Heads could take (2005)? And How would I go about making them be able to take more?