Originally Posted by MR///M3
What kind of gains are to be had from a fully catless setup plus intake without a tune, to the same setup with a tune? Would you advise pulleys as well?
A full catless setup such as RPI's GTM race exhaust system utilized in conjunction with RPI's Ram Air Induction Kit would yield approximately 40hp. Couple this with a tune such as Evolve and you should see at least 55hp gains when compared to stock.
Pulleys are a relatively cost effective mod that will yield another 8-10hp or so. I would suggest RE or AA.