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Pontiac Grand Prix Performance Mufflers

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Latest Customer Reviews

Magnaflow XL Turbo Mufflers Reviews


Perfect note for my 5.0L

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!!

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Magnaflow Performance Mufflers Reviews


Not Quite What I Expected but Still Like It.

Reviewed By Dan S (Coldwater, OH) Reviewed for a 2009 Dodge Ram —8/12/2016 1:52 PM

Had the #12588 installed with the Y-pipe upgrade on my 2009 Dodge Ram. This is my first Magnaflow muffler, and after watching numerous youtube videos I went with the 22" in fear of the drone. I was expecting to hear more of a difference when accelerating over stock, but I'm still early in the break in process. I've noticed a slight drone around 1500 rpms, it's not bad and could go away over time.

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Injen High Performance Mufflers Reviews


Injen high performance mufflers 2 3/8 inch Honda Accord V-6

Reviewed By Patrick H (ALBUQUERQUE, NM) Reviewed for a 2006 Honda Accord —6/7/2016 1:25 PM

The Injen high performance mufflers were perfect for my wife's car. The 2006 Honda Accord V-6 comes stock with two resonators, which I left attached and the sound is perfect for her car, a low and quite rumble, which intensifies as you run the rpms. More sound would be realized if one or both resonators were removed.

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