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Hummer H3 Magnaflow Exhaust, Mufflers & Tips

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Latest Customer Reviews

Magnaflow Exhaust Systems Reviews


Hummer H3

Reviewed By Gregory B (Leavenworth, KS) Reviewed for a 2007 Hummer H3 —9/26/2008 9:04 AM

Purchased the magnaflow exhaust system inconjunction with the True Flow air intake system for a Hummer H3. I installed the air intake system myself. It was simple, just as the instructions described. I had the magnaflow exhaust system installed by a professional shop. It looks and sounds great. Not too loud. Just a little more depth to distinguish it from the stock system. I have noted a slight increase in fuel mileage since installing both systems. This was a primary motivation for purchasing both systems. Hopefully, fuel mileage numbers will improve after more driving and fillups. Overall, I am quite please with quality, look and sound of both systems.

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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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