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      09-06-2011, 01:17 PM   #24
Cal@Sonic MS
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Drives: bmw
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Quote:
Originally Posted by MR///M3 View Post
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.