03-28-2010, 08:59 PM
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#11 (permalink)
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A True Z Fanatic
Join Date: Mar 2009
Location: Naples, FL
Posts: 4,117
Drives: to work
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Quote:
Originally Posted by EVL370
So in a nut shell its safe to say the Stillen, Berk, F.I cat backs will all give 15whp increase.
But doesnt the Stillen run a Y-pipe? The dyno's and website claims a 18whp increase. Is that right? Where would the design of the stillen exhaust make up the numbers due to the setback of having a Y - pipe? I was under the impression the best gains come from a X-pipe, Please correct me if I'm wrong....
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I can't show modeling equations or anything, but if the Y-pipe is designed well and has a large enough diameter where the Y merges, it shouldn't be restrictive.
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