
02-15-2008, 05:47 PM
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CC Member
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Join Date: Feb 2003
Location: Morgan Hill,
CA
Cobra Make, Engine: SPF 2293, Roush 427R-228
Posts: 298
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Not Ranked
dont forget the loss of hp form the sidepipes. If you have better flowing mufflers in your pipes that 20% can drop significantly.
Daryl
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