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Old 08-30-2013, 04:54 PM
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NWRQC NWRQC is offline
Dodge Ram Forum Senior Member
Join Date: Dec 2011
Location: W.A
Posts: 645
Gender: Male
Vehicle: 2007 RAM
Engine: 2007-2011 409ci (6.7L) Cummins Turbo Diesel 350hp 650lb/ft
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NWRQC will become famous soon enough

If you are not wanting to switch anything back for emission testing then your one option would be to unplug your EGR valve (1-2mpg gain).
You will have a CEL on, but you can buy a tuner thats capable of delting (Smarty, H&S mini maxx, XRT) that will disable the EGR and turn off the CEL.
Another option is to go with EFI-Live. You can unplug your EGR valve and get a custom mileage tune for your truck that should help increase your fuel economy.

Aside from that the only other thing that comes to mind would be going with free-spin hubs up front. People claim 1-2mpg increase, but it comes at a price. Those are things you can do that wont require tools or time to convert back in order to pass emissions.

The standard deletes will net you a little better fuel economy (EGR, EGR cooler, DPF, NOX, CAT) but those require swapping parts back and forth.

Oh another thing to look into is a TS MP-8. I am getting ready to sell mine here soon because I will probably need custom tuning before long.

Hope this helps and if you have more questions post them up.
2007 6.7 | EFI-Live | Draconian tuned TCM | T4 S366 | ARP | AFE | Thuren | Carli
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