that's my concern too, since I'm going with packs and a prochamber. It sounds sweet, but I dont' know how loud it really will be, vs my friends with a catted pipe.
I couldn't tell you if any of the flowmaster cars I've heard were american thunder or not, I just can tell they've got flows....
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1997 Mustang GT "The Freak" - 13.80 @ 101.70, 2.07 60'
1995 Honda VFR750 - not much @ really fast (actual data pending.)
1964.5 Mustang 289
Rice Haters Club Member #13
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