i got a lmm last year have not messed with anything just working on the small things it has a dsp5 switch not idea who or what tuned it. and have no clue what the tunes are.i know it is deleted and the speedo is off has a leveling kit and 33x12.50x 18i am learing about this truck slowly just need a tuner near st louis to read tunes and change speedo help ...