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GMC Flowmaster Exhaust, Mufflers & Tips

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Latest Customer Reviews

Flowmaster Exhaust Systems Reviews


Quality Sound, Black Exhaust tips set it off.

Reviewed By Garrett W (HARRISBURG, NC) Reviewed for a 2014 GMC Sierra —11/15/2014 6:11 AM

Alright so everything was a breeze including assembly and installation, and the sound quality is exactly what I wanted. The only concern I have is my 5.3L V8 Sierra has the flex fuel where it kicks down to just 4Cyls. on the Highway or when cruising below a certain RPM. It goes into a deep subtle thudding during the transition from using 8 to 4. I'm pretty sure its just from back pressure, if anyone has an answer for this let me know I'm looking for a solution. Overall fantastic exhaust.

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Flowmaster Scavenger Series Elite Headers Reviews


Worst customer service

Reviewed By Trent R (Stockton, CA) —9/26/2014 3:57 AM

The reason I bought these and the only reason I bought these is because they are California exempt the sticker supplied with the supplied with the header is just a plain white piece of paper it's not going to withstand the test of time it's gonna rub off I'm not gonna be able to get smog all other manufacturers use something like a metal sticker so I call FlowMaster advise them of my concern asked for a replacement for her like a stick inside the glove compartment of my car and they refused to give it to me so far one guy wanted for her to tell me just going to write it down on a piece of paper I double checked

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