uh? you mean double muffler? I cannot see that being much better, what I did think about was a high flow cat
Car #1 2007 Focus ZX3 SE - Blue 2.3L, Automatic, Toms Tune, OBX headers, FSWERKS Cold Air Intake and Exaust, Loaded
Car #2 2007 Focus ZX3 S - Silver 2.0L, Manual,TOTALED!!!! (Half Rebuilt)
Car#3 Mustang GT 2007 LOADED!