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Old 02-02-2007, 11:12 PM
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working Hummer working Hummer is offline
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Join Date: Jan 2006
Location: someplace crappy
Posts: 476
working Hummer is off the scale
Default Re: Magnaflow muffler

Talked to flowmaster and they said 70 series is going to have too much backflow due to you can only get it in 2 1/4" inlet. Of course we have 3". So I asked about the 50 series and they said it would work but I should get a resinator with it and put on drivers side pipe, but they wouldn't guarantee to take out the noise in the cab. He then told me the 6.0 liter engines are a nitemare to get quiet inside with an after market muffler and the only way to solve the problem is go back to stock. So thats where I'm at. Love the noise outside on Magnaflow but WOW it's loud inside on the open road. My problem is I've blown over $300 bucks already swapping mufflers and I'm back where I started. So I'm not going to bother with the 70 or 50 series flowmasters if even they say it probably wont work.
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Last edited by working Hummer : 02-02-2007 at 11:16 PM.
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