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I have a new 2008 with this new 6.7 diesel fuel guzzler :$: and I was wondering if I pull the muffler off will it get a little noise out the rear of this thing despite the cat and DPF? I'm also hoping this will help mileage a little. 14 MPG is killing me. I bought this thing Feb 28th and I already have 10k on the odometer.

I gave my dad my 2005 with the 5.9 and 25 miles pr gallon....I think I goofed up.

Thanks.

Todd
 

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Nope, not gonna make one bit of difference. You have to get the DPF off before you are gonna get much out of it.
 

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:agree2: I have already removed my muffler from my '08. Little throatier sound, but not louder. Didn't help the MPG's either. Luckily, the mufflers are slip ons and didn't waste too much of my time.
 
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