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Old 07-07-2014, 12:03 AM   #1
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Default best muffler

I need to replace my muffler on my4.6 what is the best one for good sound and not horrably loud.
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Old 07-07-2014, 12:23 AM   #2
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Old 07-07-2014, 12:29 AM   #3
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My truck came with a thrush muffler and dual tips when I bought it, first thing I did was took it off and put the borla SISO kit on it. I really like the borla, just what I wanted, truly quiet enough that it could be factory exhaust. I would also like to hear the sound with high flow cats, but I won't do it to mine. I like a flowmaster 40 series sound also but I don't think it fits the personality of my truck.
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Old 07-08-2014, 07:38 PM   #4
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I'm a flowmaster diehard... The muffler will definitely make your truck "louder". But the big echo is from the pipes, that is what makes the truck really loud and gives it that deeper sound. So, if you don't want an echo then don't put big pipes and tips on your truck after you do the muffler.

Like my truck, I put a flowmaster muffler on my truck. Then I put 18" x 3.5" in. tips on my dual pipes and the noise was substantially loud and meaner.... And I also have a 5.4L.

Hope that helps.
2004 Ford F150 FX4

K&N Cold Air Intake System, Flowmaster Dual Exhaust System, 3in Lifted Bilstein Suspension, 35" Hankook Dynapro M/Ts, 17" Mickey Thompson Classic II Wheels and HID 8ks.

Last edited by Regulator; 07-08-2014 at 07:40 PM.
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Old 07-09-2014, 08:16 PM   #5
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i like the sound of flowmaster's new outlaw series mufflers but, most flowmasters hurt power.
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