2011 6.7 Cummins tuner - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 06-06-2011, 05:33 AM Thread Starter
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2011 6.7 Cummins tuner

I just bought a new Cummins a week ago and am chomping at the bit to see what this thing can do. Anybody tuned without deleting? What kind of performance are you seeing and any problems? And what tuner do y'all recommend? For those that have deleted how tough is it to go back to stock in case you fail an inspection or need dealership work done? I've also heard that with the new computers the dealership can tell if the truck has been tuned after the tuner is removed. Any experience with this?

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post #2 of 4 (permalink) Old 06-06-2011, 10:26 PM
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First off I am not 100% sure if anyone has a tuner for the 2011.

Next, tuning with a DPF in place will create more regens and possibly cause the DPF to crack and fail. Smarty and H & S Performance are the leaders at tuning the 6.7L and either are a fine choice, though I am not sure what H & S offers for non-deleted tuning.

As far as returning to stock for dealer repairs, they will be able to tell the truck has been tuned and could void warranty or you will have to pay. Some dealers are different others. Mads says on their site the Smarty for the 6.7L is traceable unlike the previous tuners for the 5.9L.

Returning to stock would be just re-installing everything back onto the truck and removing the tuning. It would just take a few hours depending on what has been done.

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post #3 of 4 (permalink) Old 06-06-2011, 11:23 PM Thread Starter
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Thanks for the reply. I was thinking that tuning with the dpf would just cause more regens but I wasn't sure. This is my first go around with the dpf. All of my old trucks it was just cold air, exhaust, tuner and done. Take the tuner off for dealer work and never had a problem. These dpfs seem to be a pain. Oh well I may just drive the crap out of it until I'm out of warranty and then rip it all off, get a built tranny and see just what I can get out of it.lol

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post #4 of 4 (permalink) Old 06-07-2011, 03:00 AM
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probably your best bet, the manufactures are getting much sticker with warranties and warranty work, too many guys took advantage of them and they are getting wise to the shenanigans that guys like to pull, the new dmax ECM is locked up pretty tight, the guys at EFI live are having issues trying to read the stock flash through the OBDII

I bet any money that dodge and ford will be locking their ECMs tighter as well

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