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Mercury Grand Marquis Exhaust, Mufflers & Tips

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Latest Customer Reviews

Magnaflow Catalytic Converters - 49 State Legal Reviews


Better than stock

Reviewed By Jason H (Carrollton, TX) Reviewed for a 1988 Mercury Grand Marquis —6/9/2009 8:42 PM

But not high flow. They allow a little better flow than the original converters, but not much more. They do sound better though. If I can get true duals on my car, they may work even better and the y pipe may be the main issue I'm having. Installation was a cake walk. Getting the old ones off was a pain, but these went on very easily. Would have been better if they matched up to the OE air injection without modification, but that's not a big deal.

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Flowmaster Super 50 Series SUV Mufflers Reviews


just right

Reviewed By Tim R (RADNOR, OH) Reviewed for a 2015 GMC Sierra —6/30/2015 5:52 AM

the 50 muffler is the right one for me and my sierra. it is just loud enough to let you know there is power under the hood, but it will not vibrate inside. unless you punch it, you would not notice it much. you can tell in normal driving it has more torque and horsepower.

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Flowmaster Super 10 Series Mufflers Reviews


love the sound

Reviewed By Brian E (LAS VEGAS, NV) Reviewed for a 2006 Ford Expedition —6/29/2015 10:51 PM

Recieved the muffler in two days. Had it installed the next day. the sound is loud and powerful, most of my friends have said it makes my Expedition sound like a Shelby Mustang. I have seen an increase in power and torque. Dont know if theres an increase in MPG because I lay my foot into it a bit more now just to hear that beautiful growl

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