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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 Direct-fit Catalytic Converters - 49-State Legal Reviews


passed emissions

Reviewed By Jorge R (Farmersville, TX) Reviewed for a 1994 GMC C/K 1500 —11/6/2014 6:19 AM

The angle was off a little. I made it work but connecting to my exhaust was/is causing vibration against the frame.

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Flowmaster Super 10 Series Mufflers Reviews


flowmaster 10 review

Reviewed By STEVE C (Ruston, LA) Reviewed for a 2013 GMC Sierra —10/28/2014 7:00 AM

FLOWMASTER 10 MUFFLERS SOUND GREAT AND INSTALL EASY, AND A GREAT PRICE.

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