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GMC Exhaust, Mufflers & Tips

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Latest Customer Reviews

Magnaflow Performance Mufflers Reviews


Magnaflow muffler

Reviewed By Dawn D (COLLEGE POINT, NY) Reviewed for a 2013 GMC Sierra —7/21/2015 9:26 AM

So far so good. Purchased as a surprise for my husband delivery was quick, installation was easy done at a local muffler shop. He was quite surprised when I picked him up and had him drive she has just enough sound to take notice but not be overwhelmed.

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Magnaflow Catalytic Converters - 49 State Legal Reviews


Great

Reviewed By Paul V (Green Bay, WI) Reviewed for a 2003 GMC Sierra —6/4/2015 6:02 AM

I bought the: Magnaflow Catalytic Converters - 49 State Legal Universal Fit Part #: 99209HM Had them installed for $150. They replaced the original ones on the truck with a stock exhaust (6.0 GMC). They seem to make the exhaust sound a little deeper in tone, which I like.

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Flowmaster Street Performance Mufflers Reviews


Sounds great!!!!! 40 series

Reviewed By charles t (FOUR OAKS, NC) Reviewed for a 2014 GMC Sierra —4/15/2015 8:59 AM

Muffler sounds great when added with a k&n 77 air intake. Just remember new sierras and silverados, need to have the exhaust adaptive valve locked in full open position for full effect. Spring loaded valve damper inside pipe 6 inches after factory muffler. There to keep down sound when in v4. Does not effect performance of vehicle. Also remove the resonator. Worth the investment!!!!

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