Reviewed By Ian M (Sedgwick, KS) Reviewed for a 1999 Pontiac Firebird —7/10/2011 3:32 AM
Love the sound of my 40 series. I put it on my 99 Trans Am. Sounds great and turns heads. Love it.
Reviewed By John Y (Novi, MI) Reviewed for a 1968 Pontiac Firebird —8/15/2007 10:14 AM
These mufflers sound good outside of the car. They give the car a nice growl. I have a 1968 Firebird with a 400 engine. A little more resonance inside of the car than I expected. I am running 2 1/2" exhaust.
Reviewed By Paul B (Waukesha, WI) Reviewed for a 2015 Ford F-150 —8/23/2016 7:24 PM
It's a bit noisy at first until the muffler settles in but now she hums. It's not too loud on the highway either and there is no drone effect like the Flowmaster's. 70-75 MPH seems to be the sweet spot!!! Great American made product!!
Pontiac Firebird Formula Performance Mufflers
Pontiac Firebird Trans Am Performance Mufflers
Pontiac Firebird Trans Am 25th Anniversary Performance Mufflers
Pontiac Firebird Trans Am GT Performance Mufflers