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Pontiac Grand Prix Performance Mufflers

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Latest Customer Reviews

Magnaflow Performance Mufflers Reviews


Magnaflow 12579

Reviewed By Jeff T (Des Moines, IA) Reviewed for a 1999 Dodge Dakota —6/20/2017 3:20 AM

The 12579 is a large case single inlet, single outlet muffler. Internally the exhaust is split running the length of the case rejoining before exiting. The muffler has a nice quiet rumble at idle with no drone at speed. It has a nice performance sound when the throttle blades are opened wide. Install consists of headers, 2 1/4" to 3" Y-pipe, 3" through remainder.

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Magnaflow XL Turbo Mufflers Reviews


Now my truck sounds like a truck

Reviewed By Robert O (Apple Valley, CA) Reviewed for a 2014 GMC Sierra —6/9/2017 1:07 AM

The only mufflers I buy are these... Mellow at Idle but you when you cut her lose these mags sound amazing, not like those beer can mufflers from Santa Rosa Ca

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Magnaflow Glass Pack Mufflers Reviews


Love the sound

Reviewed By Kris F (IONIA, MI) Reviewed for a 1997 Jeep Wrangler —3/28/2017 5:38 AM

I put the glass pack on a 97 wrangler and I love the sound. Not over powering but just right. Best sound I have used on any vehicle.

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