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  #1  
Old 07-20-2014, 12:21 PM
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Default Anyone install Mufflex on 6.4?

Mufflex has a kit, DOD250035, for the 2014 6.4L. Has anyone put one on and if so what is your impression? Thinking about getting it but not sure if I'll like it. Sound, any hp or mpg differences?

Thanks
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Old 07-20-2014, 09:26 PM
xpress ram xpress ram is offline
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yup put one on mine sounds good fit well only problem couldn't get forward clamp tight went to napa added extra clamp .
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Old 07-20-2014, 10:45 PM
LowersFarms LowersFarms is offline
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I have been looking at Mufflex as well , I am just worried about what it sounds like when it shuts down 4 cylinders . I have heard that the Chevys sound like a rice burner when in the Eco mode , but it can't sound much worse than the whistling , chirping that my 6.4 does now when it goes into Eco mode.
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Old 07-26-2014, 01:53 PM
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Any updates?
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Old 07-27-2014, 01:27 AM
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To be delivered Monday, while I'm on vacation. Will update after installation.

Thanks,
Jp
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Old 07-27-2014, 06:46 AM
whitetrashmo whitetrashmo is offline
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Give us a sound clip please when you get put on
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Old 08-05-2014, 09:03 PM
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No sound clip yet but it sounds pretty good. A little louder than the wife likes but she can live with it okay.

Just put it on yesterday and so far so good. I think I'm getting better mileage already. Time will tell.

When running on 4 cylinders it sounds a little funky, but how often do we really run on 4? I can live with that.

I'll update after I have more info.
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Old 08-05-2014, 09:36 PM
Derag2 Derag2 is offline
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does this delete the resonator as well or just the muffler?????????/
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Old 08-05-2014, 10:30 PM
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Any pics of the final product? Was it a simple bolt-on aside from the clamp issue?
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Old 08-05-2014, 10:55 PM
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Mine is being shipped tomorrow
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