Exhaust Question

[Premium08]

I've been looking through some threads and cant seem to find the answer im looking for. Is there any performance to gain by deleting the mufflers vs going with an aftermarket muffler system? for an 08 GT. is one way better for gas mileage?? Thanks

 

[JEWC_Motorsports]

http://www.s197forum.com/forum/showthread.php?t=30893&highlight=muffler+performance

This should help you.

 

[UltraKla$$ic]

Gas mileage? What's that?