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B said:
< 5 hp...


but you also gain improved aestetics and sound! :thumbup:
:werd: an exhaust in itself isn't a huge hp gain...it really helps you when it's paired with an intake and a header (which is by far the biggest bolt-on hp increase)...and face it, most of us get the exhausts because we want the sound! (I know I did, I could care less about the 5 hp I gained on the 328)
 
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