Mini Maxx

The Mini Maxx Street tuner is the next generation of diesel downloaders from H&S that combines high performance tuning with a complete set of digital gauges. With the flexibility of shift-on-the-fly tuning, plus the safety of automatic de-fueling, the Mini Maxx Street tuner has you covered.

*All Mini Maxx Street tuners comes pre-loaded with 4 power levels that can be changed at any time, on the fly. Whether you simply want some extra power to pass when towing, or want an all-out high performance tune, the Mini Maxx Street tuner has what you need!

*Power levels are not currently shift-on-the-fly for the 2011 – 2012 6.6L LML

*This product is not legal in the state of California