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 Frank R L (Brick, NJ) Reviewed for a 2015 Chevy Colorado —4/28/2015 8:50 PM
Stock exhaust was so quiet you had to check the tach to see if it was running. I called Magnaflow and asked if the exhaust system my dealer mentioned was quiet, the answer was "YES." It has the largest muffler we have. When it was installed it was NOT quiet. The only option was to add a resonator. The replacement system was a direct fit no alteration install. The resonator was a custom install that had to be welded in!! Fortunately with the resonator it is quiet but noticeable.
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