I recently installed a 30HP tune in my 2015 ram 3500 aisin. To me, the stock tune felt stronger....

What’s got me thinking is...From what level of Cummins engine since Ram offers 3 levels. They have a, for 2015 models, 350/660, 370/800 and 385/865 HP/TQ ratings.
Where does the 30HP tune add power from? The 350, 370 or 385?

I sort of regret doing this to my truck now after the results I’ve got.


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