Nov 25, 2010 #1 Y yooooo New member Joined Nov 25, 2010 Messages 1 Reaction score 0 Points 1 Was wondering about additional mods I can do to my 2004 CTS with a 3.6L. K&N intake and magnaflow exhaust already installed. I don't want to spend 6,500 on a supercharger and have considered tuning with HPTuners. Any other possible performance mods?
Was wondering about additional mods I can do to my 2004 CTS with a 3.6L. K&N intake and magnaflow exhaust already installed. I don't want to spend 6,500 on a supercharger and have considered tuning with HPTuners. Any other possible performance mods?