Good info. I am just getting ready to bolt my 3" solo setup on. I had the 2.5" mach shorty with HFCs before and it wasn't too loud, but now I am going catless. Is it significantly louder than the mach shorty?
Mods: 50W 5500K HIDs, LED Fogs, Forged motor, Kooks 1 7/8 LTs, 3" Solo Exhaust, RC Cam 223/239 116+2 , RCR Tune, 150 Wet Shot, Dual Nozzle Meth kit, Triple 450 Pumper w/Vaporworx, F1A Procharger, 3200 Triple Disc Stall, CTS-V 6-pot Brembos, Weld RTS wheels, Tein Springs on Konis, BMR Sways, BMR strut/cradle bushings, G-Force 3.5" DS, 35% tint, SQ Audio Setup - RF 3Sixty.3 DSP, Alpine PDX-9V, ARC XDi1200.6, AudioFrog GB10s, GB40s, GB60s, Alpine SWR-1242D