H&S Performance Mini Maxx Street Tuner


Combining high performance tuning with a complete set of digital gauges, the H&S Mini Maxx tuner has the potential to help release the power trapped within your diesel engine. With the flexibility of shift-on-the-fly tuning, along with automatic defueling, the Mini Maxx has the features you're looking for. The Mini Maxx can be installed in MINUTES. Just plug the tuner into your OBDII port and run power to the fuse box and you could have an  additonal 120 hp at your finger tips. The H&S Mini Maxx gives you the freedom to change all sorts of things with your truck including: speed limiter, tire size calibration, transmission shifts, vital truck readings on the screen and more. Comes with a standard suction cup windshield mount or additonal mounts are available. See Related Products for more.


*Power levels vary per application. 

*Power levels not 'shift-on-the-fly' for 2011-2012 6.6L LML Duramax engines

  • Reads/Clears Diagnostic Trouble Codes
  • Internet Update-able with included SD Memory Card & USB Adapter
  • Free Custom Tunes Available for download
  • Tire Size Calibration
  • Change Factory Speed Limiter
  • Tire Pressure Monitoring System Adjustability/Disable