Why does my 4v Mac Exhaust sound horrible after On3 turbo kit Install?
Recently i installed a on 3 kit on my stock 99 cobra .. Previously i had a Upr X and Mac Cat back and loved it it was a nice deep sound .. Now w/ the On3 pipes going into the Mac Cat back it sounds horrible like i have rock in the pipes/mufflers on decel and when i shift .. How does everyon else's exhaust sound ? Is there anyway to change it?
Should i add a resonator ..change my cat back?
1999 Rio Red/ Black Cobra . Manley Pistons, Scat rods Arp hardware.... On 3 Performance Kit w/Master power 70mm Turbo, 03/04 cobra tank and pumps , 60lb injectors ,HPX Mass air, 4:30 gears 03/04 axles & diff & SCT tuned by EFI logics