BLK2012GT
forum member
Here is the thread the shop doing the work on my car made. Without any other tuning, just ported the boss manifold runners and a custom 4 inch cold air piping I went from 509 rwhp NA to 525 rwhp. I picked up quiet a bit theough out the graph in hp and tq.
http://dfw50s.com/showthread.php?t=2144
http://dfw50s.com/showthread.php?t=2144