It's not that it can be done with 2.5", but it is easier to get there with a 3" pipe. Really for me it's about allowing for optimum flow and getting rid of as much heat as possible. Anyway, I don't think the companies which make 3" exhaust are doing it because it's cool. FI has only sold about 20 of them....
__________________
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|
|