Reviewed By Alex G (Dubois, IN) Reviewed for a 2004 Pontiac Grand Am —12/3/2011 5:17 AM
This muffler sounds amazing I love the deep rumble it gives at both low and high rpms
Reviewed By Jeff T (Des Moines, IA) Reviewed for a 1999 Dodge Dakota —6/20/2017 3:20 AM
The 12579 is a large case single inlet, single outlet muffler. Internally the exhaust is split running the length of the case rejoining before exiting. The muffler has a nice quiet rumble at idle with no drone at speed. It has a nice performance sound when the throttle blades are opened wide. Install consists of headers, 2 1/4" to 3" Y-pipe, 3" through remainder.