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Old 05-19-2003, 04:54 PM   #8
Hammer
AKA "Dr. Evil"
 
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Join Date: Feb 1999
Location: South Fork Ranch
Posts: 1,721
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The FR 500 cat back will add a legit 8-10 RWHP and sounds awesome. I personally seen it dyno proven.
Thanks for the info Dark, the Cobras are definately different animals when it comes to bolt ons....

The best improvement I've seen from a cat-back only install so far is around 6rwhp, and that was (of course) on a GT...
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