Time to go get my system sound tested... 2.5" cat back, mild steel, press bends, 2x Supercat 12" resonators and 2.25" inlet/ 3" outlet S12 Xforce twinloop. I'll fill up right the brim with premium, as that usually dampens the noise levels for some reason. Reckon I'll pass? Gotta be under 90dB :S They test the noise produced by the engine holding 3000rpm right?