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6.7 Performance Parts Discussion 6.7 Performance Parts Discussion

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Old 07-25-2012, 06:57 AM
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Need some quick advice

I know I will be buying the Mini max and I already own the Volant CAI. I need to make a decision on exhaust

Option 1 DPF and Cat delete pipe

Option 2 4 inch turbo back exhaust

Option 3 5 inch turbo back exhaust


I am leaning towards the middle of the road (4 inch exhaust). What do you guys that have already modded their trucks think? Cost worth the benefit?

Thanks
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Old 07-25-2012, 07:19 AM
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What size is the stock exhaist on a 6.7?
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Old 07-25-2012, 09:30 AM
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Stock exhaust is 3.5" off a 4" double wall DP.

I'd do a 5" DP back exhaust. Sounds better and some say your EGT will be slightly lower.
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Old 07-25-2012, 10:21 AM
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5" with no muffler?
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Old 07-25-2012, 11:34 AM
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5" no muffler.
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Old 07-25-2012, 12:07 PM
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I have a 2012 with a CAI,mini maxx,5" straight pipe DP back
I had a 4' straight and it didnt sound as good so i went with the 5" and you can hear the turbo alot more and sounds way better. go witht the 5" you wont regret it
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Old 07-25-2012, 06:27 PM
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I've got a mbrp 5" dpf back with a 4" delete pipe. I wasn't gonna delete at first so just went with the dpf back for looks. Months later I couldn't resist and deleted but they only had 4" delete pipes but it was all compatible with my already existing dpf back system so all was good. I can tell you that I have no regrets. Sounds amazing, loud when you stomp on it but not irritating when just strolling around.
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Old 07-26-2012, 09:56 AM
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Is your MBRP a straight pipe or muffler?
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Old 07-26-2012, 10:10 AM
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Straight piped and no muffler for me
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