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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 40 Series Delta Flow Mufflers Reviews


AMAZING!!!

Reviewed By JEREMY A (Manchester, TN) Reviewed for a 2005 Dodge Ram —3/25/2008 7:59 PM

I JUST INSTALLED MY FLOWMASTER 40 SERIES DELTA FLOWS AND I COULD NOT BE HAPPIER! THEY ARE THE BEST SOUNDING FLOWMASTERS THAT I HAVE EVER OWNED! THERE IS SOME NOISE INSIDE THE CAB AND A BIG GROWL OUTSIDE THE CAB. I DON'T THINK THAT FLOWMASTER COULD HAVE MADE A BETTER MUFFLER FOR MY HEMI.

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