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GMC Performance Mufflers

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Latest Customer Reviews

Flowmaster 70 Series Big Block II Mufflers Reviews


Flow master 70 series

Reviewed By Jeffrey S (Warsaw, MO) Reviewed for a 2008 GMC Sierra —11/10/2016 3:22 AM

I purchased this muffler to replace a smaller flowmaster muffler that was too loud for my application. This has the performance of the flowmaster technology without all the noise.

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Flowmaster Super 44 Series Mufflers Reviews


What Did You Say?!

Reviewed By Joseph N (CLINTON, ME) Reviewed for a 2011 GMC Sierra —9/21/2016 8:13 PM

My ears are bleeding.... I love it. For real though, it's a little louder in the cab than I wanted, but I'm glad I didn't go with the Super 10. Good price, gotta love AutoAnything. Had it welded, only way you should do it really, and appearance I could care less about because no one is going to be looker underneath my truck.

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Flowmaster Super 50 Series SUV Mufflers Reviews


Cabin Sound

Reviewed By Glenn S (Waupaca, WI) Reviewed for a 2015 GMC Acadia —5/19/2016 8:20 AM

I like my Flowmaster 50 series muffler but i wish I would have gotten a 70 series Flowmaster for less noise, I do not mind a little noise in back of the car but cabin noise bugs me, as they say after the fact. It would be nice if there was a return policy if we the customer was not happy and was going to exchange for a similar product.

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