Having a little trouble with my first 6.7

[shakinlm7]

Just bought an automatic 08 Ram 3500 C&C. Upgraded my efilive from GM to GM&Cummins. I thought everything went smoothly, instructions where easy enough and I did some scanning on the truck before buying without any problems, but now that I'm trying to open up the tune I pulled out of it I'm not having any luck.
I've attached the EFILive pop up and the general info about the truck. As far as I can tell the OS and Calibration appear to be out of a regular non C&C Cummins. Is it posible someone uploaded a modified tune with an OS and Calibration different than the truck came with? Or did I miss something or screw up some where when upgrading my scan and tune for GM and Cummins

VR
Mike

CMC todds 2008 3500 6.7 ram cab and chassis.ctz

[shakinlm7]

After trying a few stock tunes I found one from tunefiledepot that I could open so I assume the OS in the tune above has never been mapped?

If that's the case and you feel its worth mapping let me know. I can tell you its a 4x4, Aisin Trans, SLT, quad cab that I believe to be 100% stock.

If its not worth mapping can someone recommend the best stock modifiable tune to put back into this truck?

[ATPCummins]

What you are experiencing is not uncommon. I have found that some of the old cab and chassis operating systems like you have are not supported. I recommend using a newer OS.

[shakinlm7]

Thank you Mr Dorsey,
Should I just go with the 11610805 OS 61301434 Cal that's listed for a Cab & Chassis or is there a better option some where?

[ATPCummins]

No problem. The 805 SHOULD work ok for you. The cab and chassis trucks can be a little picky though, especially depending on the application from what I have found. The 806, 809, and 902 are also decent options in my experience.

[shakinlm7]

Will I be able to flash the original tune back into the truck even though I cant read / adjust it? In case 805 doesn't work out for my truck?

[ATPCummins]

To be honest i have never flashed in an un-mapped OS, but I don't see why it wouldn't work.

[shakinlm7]

So I took the safe route and shelled out a little change to have the dealer install the updated stock tune. New OS is 11610805, Cal is 61300434AM, I was able to open and read / compare and it appears to be pretty close to the 11610805 OS 61301434 Cal available on tunefiledepot. Haven't went through to compare everything one at a time but cnrt+F12 pulled up the screen shot bellow.
The dealer updated the CCN too. I haven't done a manual calc yet but my MPG display seems to be a LOT closer to actual now. Before it was showing 16-21 and I was only getting 12-15 mpg when I calculated at fill up, Now its just under 15.

[shakinlm7]

btw truck seems to run a little better, More available tq for sure, smoother shifting between gears while driving and going between park, reverse, drive while setting still.
Thanks again for the input!