I have had mine for about two weeks now. I also had ART pipes installed at the same time. The power is noticeable, I can't really comment on the change in tone because of the ART pipes and AAM Short tails. I think tone will be determined by your exhaust, cats, test pipes or long tube headers in IMO.
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Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:|Fast Intentions 3" TT-TDX|SpecialtyZ/Fast Intentions 72 Row Oil Cooler|SZ 6 Puck Clutch & Flywheel|3GsCustoms|Z1|Wavetrac|Hotchkis|Whiteline |Blitz|Fortune Auto 500|Fujimura|SPL|H&R|TK|TWM|RPM Rollbar|Sparco|Next Level Performance|TrackSpec|AeroFlow Dynamics|Pioneer|
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