Quote:
Originally Posted by blownstang
I doubt the flowmaster catback gave him 7 rwhp. Maybe 2 or 3 rwhp.
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my friends bullitt gained alot mroe than that. went from 240rwhp to 250rwhp by adding a SLP catback.
2-3rwhp seems low to me on a GT for a catback exhaust. maybe a v6 mustang.