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Oldsmobile Performance Mufflers

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Latest Customer Reviews

Flowmaster 40 Series Delta Flow Mufflers Reviews


nice american rumble

Reviewed By Alex W (East Orange, NJ) Reviewed for a 2001 Oldsmobile Alero —11/15/2012 12:23 PM

had it professionally installed sound better than i could image dont know about fuel eco cause i gotta heavy foot but couldn't be happier

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Flowmaster Super 50 Series SUV Mufflers Reviews


Awesome!

Reviewed By Aaron K (Kimball, MI) Reviewed for a 1998 Oldsmobile Bravada —9/9/2009 7:06 AM

Replaced my old muffler with the 50 Series, and what other people say is true. That if you don't like loud, but still want a little rumble, this is the way to go.

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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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