I have a 2017 ram 2500, with the 5.7L Hemi. 3.73 gears. I just put 32" tires on it, up from 30.5" I am looking for better mileage out of this thing. Is there a programmer yet that will do this, without the Diablo computer swap?

 

Nothing without a computer swap. But Diablo hasn't supported the 2015+ 5.7 model 2500's in general.

 

Other than this being yet another 1st post with some off-the-wall question: most people who buy a truck and put oversize tires on the thing don't care about fuel economy. I wasn't aware one could even get a 2500 with a 5.7l; I thought they were all 6.4l; hmmmm -

 

The 5.7L Hemi is the standard engine with the 2017 2500. The 6.4L and diesel engines are options.

-Rod