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GMC Yukon XL Performance Mufflers

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Latest Customer Reviews

Flowmaster 70 Series Big Block II Mufflers Reviews


The Yukon XL hums

Reviewed By Joe S (Boulder, CO) Reviewed for a 2001 GMC Yukon XL —2/3/2010 1:47 PM

Wanted to spruce of the old rig, 2001 GMC Yukon Denali XL, so asked a lot of car guys for advise. The 70 Series seemed to be the choice. The XL is the family car and not a muscle car. Autoeverything price can't be beat. Meineke did an install for $50 as it was essentially a swap. They needed to flute the pipes a bit as stock is 2 5/8 and 70 Series are 2 1/4. Dual in, dual out into a Y with a single exhaust. Experts appear split on benefits of dual exhaust, bigger sound, maybe little power boost. Dual exhaust pipes would have cost another $300 or so. Sounds great and heads turn, but inside the rumble is pleasant. A bigger sound might be great at first, but conversation in the car would suffer. Kept the factory pipes, single outlet. I love starting up the Yukon and I feel the extra power for sure. I can really feel the power on climbs. Also put in an oversized K&N airfilter.

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Flowmaster Super 50 Series SUV Mufflers Reviews


Breath right !

Reviewed By Mark G (Reno, NV) Reviewed for a 1997 GMC Yukon XL —6/5/2006 9:09 PM

I have had a K&N air filter system on my Yukon for years....but it just didn't breath right until I installed the Flowmaster muffler......thanks for the reasonable prices and good customer service !!

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Flowmaster Street Performance Mufflers Reviews


Moderate Rumble

Reviewed By Chris F (LITTLE HOCKING, OH) Reviewed for a 2012 Nissan Titan —6/21/2015 7:35 AM

So far, so good! I was initially concerned about the db level that I would hear in the truck. The rpm range is limited for optimal rumble range for my Titan to be around 1500-2500. That is just what I was hoping for from my research. I really have not noticed any fuel rating increase as of yet. However, that is hard to judge due to the fact that I tend to stay in the rumble range when applicable.

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