I have just purchased a 2015 2500 CCSB with 135K.
The shop I purchased from did a full delete, 4 in straight pipe, 2.5 level with some nice wheels and tires.
His tuning ability came down to 1 option of 35- 120HP.. I chose the 35 to be safe.
Took truck on 5 hour trip over Thanksgiving and with a good wind only 18ish MPG.
That I can live with but have heard crazy numbers and would surely love to get better.
The biggest issue to me is the transmission seems lost, confused, something...
Drove a bunch of slow curvy roads and trans was shifting into 5th and 6th and chugging along unless I gunned it or shifted manually.
Not very "driveable" imo.
Will a trans tune help this?
Thanks, Chris
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