hi. my girlfriend wants to have dual exhaust for her car. i have a gt with borla mufflers. if she cut the y pipe right after the cats and threw on this h-pipe adapter along with my borla setup, would she notice any difference in performance? what about sound?
link for the h-pipe adapter.. http://store.cal-mustang.com/cm_abl...62&CATID=20
link for the h-pipe adapter.. http://store.cal-mustang.com/cm_abl...62&CATID=20