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Old 02-15-2008, 04:47 PM
dlang14 dlang14 is offline
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Join Date: Feb 2003
Location: Morgan Hill, CA
Cobra Make, Engine: SPF 2293, Roush 427R-228
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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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