question about exhaust ??
#4
the 3.5" are just the tips. The rest of the system and the only part that means a damn is the skinniest bit, which you've said is 2.5" on the catback. It's 2.25" on the stock H pipe so all you've done to power is change the sound it makes. I'd be shocked if you changed by 1% rwtq or rwhp.
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