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 Brian E (LAS VEGAS, NV) Reviewed for a 2006 Ford Expedition —6/29/2015 10:51 PM
Recieved the muffler in two days. Had it installed the next day. the sound is loud and powerful, most of my friends have said it makes my Expedition sound like a Shelby Mustang. I have seen an increase in power and torque. Dont know if theres an increase in MPG because I lay my foot into it a bit more now just to hear that beautiful growl
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