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04 Denali, Magnaflow Muffler

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Old Dec 9, 2012 | 10:31 PM
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Default 04 Denali, Magnaflow Muffler

Hello, im trying to figure out what magnaflow to get thats not much louder than stock. Im not sure on what size and options would be best. I will be running lpp longtubes, catless midpipe, dmh e cutout, dump. The lpp midpipe would require mods to work with stock muffler, i want it to be a clean setup. Thanks!
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Old Dec 10, 2012 | 01:43 PM
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imo a 22" oval would be perfect.
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Old Dec 11, 2012 | 10:33 PM
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http://www.magnaflow.com/02product/d...rtnumber=12579

This is what I'm running. I love how it sounds
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Old Dec 11, 2012 | 11:33 PM
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Thanks, now just need to see if i need center or offset.
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Old Dec 14, 2012 | 07:33 AM
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let us know how it sounds.
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Old Dec 15, 2012 | 01:41 PM
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Originally Posted by 04bluesilverado
let us know how it sounds.
will do
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Old Jan 6, 2013 | 12:51 AM
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lpp longtubes only...
Jan 5, 2013 - YouTube
Jan 5, 2013 - YouTube
Denali longtubes dumped - YouTube

magnaflow 12589 video later
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Old Jan 6, 2013 | 05:06 AM
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Your stock exhaust is dual in and dual out that goes to single real fast. The factory exhaust dual out is pointless as only one pipe flows air and the other is useless. Actually do you have a Sierra or Yukon Denali? Not sure if the Yukon is different or not.
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Old Jan 6, 2013 | 11:14 PM
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yukon denali. factory was 2 in 2 out into 1 tailpipe
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Old Jan 6, 2013 | 11:45 PM
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Looks like Magnaflow uses a 5 x 11 x 22in. Muffler in there Cat back kit so why not get something that is similar??? You could do a dual in and a Single out since there muffler is straight through and will merge the 2 Like an X pipe internally.
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