Thread: Tbird/cougar
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Old 03-29-2009, 12:15 AM   #4 (permalink)
Electric Frenzy
EcoModding Apprentice
Join Date: Mar 2009
Location: Birmingham, AL
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a friend and I built some headers for a buddys supercoupe. It was an AMAZING gain. Apparently the stock manfolds are real restrictive and he could only get an additional 2-3psi out of the blower. After the headers it was a MASSIVE gain. I'd have to say close to 30-45whp.
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