Quote:
Originally Posted by Riderover40
I can tell you that the addition of my CORSA Sport cat back system has given me the sound and look that I was looking for! I mean lets face it that that the measily maybe 15 to 20 ponies it added was "not" the reasoon I put it underneath my Blue Baby!!!
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There are plenty of people that have dyno'd their car before and after a exhaust swap. There just isn't enough restriction in the OEM catback to gain that much HP. In order to get HP from a aftermarket exhaust, you have to get rid of the restriction in the OEM one. What part of the OEM catback is a restriction? You have 2.5in tubing. Yes it's pressbent but there aren't BIG bends. The H-pipe is the place where HP is made and that's swapping to a X-pipe. The muffler is the usualy culprit but the OEM ones are straight thru. You have maybe 10whp to be made from a catback and that's pushing it. If you want real gains you have to go LT's and highflow cats or swap out the OEM cats for highflow ones.