Is there a setting with the Spartan that allows you to have STOCK POWER with STOCK TRANNY SHIFTING but deletes the DPF regens?
Yes there is, but why would you want to????
If you are going to go to all of the trouble to re-program your truck and remove the DPF, you will be tempted to use the higher horsepower tunes. If you do, you'll never go back.
I just towed my new 5th wheel from West Texas to Central Texas (Hill country) with the 250 tune. Got 11.7 mpg on the way there. The transmission never had to down-shift to pull the hills (I did not run it in Tow-Haul mode). The turbo just provided a little more boost.
On the way back I decided to try the stock tune with DPF-off, since I had never pulled a trailer in that configuration. Mileage went down to just under 9 mpg and the transmission was continually down-shifting to pull the hills, whether I was in Tow-Haul or not. At the first fuel stop I changed back to the 250 and started smiling again.
The difference in my exhaust gas temperatures towing "stock" and "tuned" were less than 150 degrees, which really surprised me. I never saw more than 1,100 degrees. What is odd though is that I had my coolant temperature "alarm" set too low on the DashDaq. Running "stock" it came on 3 or 4 times. It never came on while "tuned".
Also, I always hand-calculate my mileage and squeeze every drop of fuel into the tank so that the calculations are very accurate.