About DSLTune

DSLTune is an independent diesel performance tuning business. We live in the calibration files — building, sorting and verifying tunes for the trucks people actually drive and work.

Our shelf spans 24 platforms and every model year, from the early LB7 Duramax and 5.9 Cummins to the newest L5P, 6.7 CM2450 Cummins and 6.7 Power Stroke. Each tune is matched to a software and tool, priced clearly, and delivered by hand so it fits your exact truck — not a generic one-size file dump.

Can't find your setup? We build custom. Tell us your truck, your goals and your tool, and we'll dial it in and support the flash.