11-20-2008, 02:56 PM
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CC Member
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Join Date: Feb 2006
Location: Scottsdale,
AZ
Cobra Make, Engine: Superformance, Roush 427R-095, Pro Systems carb, 2" headers, Buckshot Racefab side pipes, 10s off idle start
Posts: 705
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Not Ranked
As my Superformance was delivered from the dealer it was down about 28% HP from engine to wheels.
After I changed the headers, side pipes, carb, air cleaner, fuel line and fuel filter it was down about 15% HP from engine to wheels.
I think this is typical
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