Message: there are no diffrences in sound or performence in these 2 mufflers, well atleast on the v6. i was bored today and since i have like a million mufflers i decided to take my superturbo off and put on my ultra flow, and there was no diffrence at all. not in anything. if anything the superturbo may have gave me a tiny tiny tiny tiny bit more low end
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Subject: super turbo vs ultra flow