Originally Posted by FocusBoy58
car runs slightly lean but like my signature states im at 175wp and 151wtq with the mods. The Lean condition is 13.1-13.3 and when tuning becomes availible we should see some HP from tuning to 12.8-12.9 But As of right now all of my gains were noticeable from 2500 rpm and up. The focus makes 145+ wtq from 2500 to redline which means its a monster now compared to the 132 it made at 3800 and fell off down to 120wtq.
For me its not a question of will it help.. because there has been a dozen threads showing 15+ whp from intake and exhaust.
^^^This. Plus he is also running a header. Even his mild lean isn't overly dangerous because it is a DD and he probably isn't running WOT constantly.
Edit: cuz I was wrong