You should try putting a convertible top down and driving through a tunnel...
My car sounds incredible with the top down, under cruising you can barely hear it, but open it up and WOW!! Love the Roush A/B... the only exhaust Mod.
2011 Roush Stage 2 Convertible Race Red with painted gloss black stripes, Charcoal Interior-Roush # 11-0306
Bama Tuned, Roush Front and Rear Brake Kit, Roush Exhaust with Square tips, 20" wheels, Roush seating with Red stitching
Roush Billet Grille matching lower 3 piece, Matte Black side and top stripes, White Face Gauge cluster, Convertible Light Bar Purchased 27Dec2010
Dyno'd 401 HP/ 390 Ft lbs at the wheels