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Pontiac Grand Prix Performance Mufflers

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Latest Customer Reviews

Flowmaster Super 44 Series Mufflers Reviews


great

Reviewed By jeremy t (LIVINGSTON, TN) Reviewed for a 1998 Pontiac Grand Prix —12/17/2014 8:08 PM

Love the sound easy to install and happy with the fast shipping

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Flowmaster Super 40 Series Mufflers Reviews


sweat

Reviewed By Michael L (Pennellville, NY) Reviewed for a 2004 Pontiac Grand Prix —4/30/2013 5:26 PM

wasn't really sure how they would sound with a 3.8L but I guess it is what it is its not some monster v8.But yes I Really do enjoy the deep sound, Ive ALWAYS loved the sound of FLOWMASTER.

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Flowmaster Super 10 Series Mufflers Reviews


Great muffler, Great price

Reviewed By Jacob S (BELLEVILLE, MI) Reviewed for a 2014 Ford F-150 —1/11/2017 2:25 PM

Bout this for my '14 150 5.0. Someone I know in my family has this on their ram and it sounded great so I decided to get one for my truck. Deleted my resonator and replaced this for the muffler and I am very happy. It was obnoxiously loud for a week and since then it has broken in and quieted up a little. Also has made my truck gain quite a bit in fuel economy even in the cold weather.

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