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H&S Mini Maxx Race Tuner GM 2011-2014 6.6L LML Duramax - 109003

Part# 109003

Fits: 11-14 LML Duramax

From the leader of DPF Deletes and Code-Free Tuners, H&S Performance, comes the newly redesigned & versatile Mini Maxx Tuner / Monitor, for your 2011-2014 Chevrolet / GMC 2500HD & 3500 Duramax diesel pickup truck. Originally designed for closed-course racing, the Mini Maxx allows the removal of the DPF, EGR and EGR Cooler from the exhaust system — code free! The Mini Maxx comes with DPF-Equipped tuning modes as well. With four different power levels, experience rear-wheel horse-power increases from 40 up to 80 over stock in DPF-Equipped mode — and HP increases of 50 up to 150 without the DPF! Rather than resting on its successes, H&S continues to raise the bar with the Mini Maxx tuner / monitor.


  • Precisely tune engine with power increases from 50-175 RWHP
  • Speedometer & ABS re-calibration for use of non-stock size tires or gearing. Up to 44" tires
  • Monitor 12+ parameters from an lcd color display
  • Remove the DPF from the exhaust system. Code free!
  • Turns off the EGR system. Code free!
  • Remove the top speed limiter
  • Read / Clear Diagnostic Trouble Codes
  • Internet update-able with included USB cable
  • Instant power level switching (not available for 2011+ model years)
  • Made in the USA


  • EGR Delete - With H&S tuning installed, the EGR system on the Duramax can be completely removed with an EGR delete kit or blocker plate while remaining code free. 
  • DPF Selection - The DPF or Diesel Particulate Filter is part of the factory exhaust system on the LMM or LML Duramax. H&S offers tuning that allows the DPF to be left in place, or removed completely.
  • UREA / SCR System - On the 2011 – 2013 LML Duramax, there is a UREA system that can be unplugged or removed completely when running DPF REMOVED tuning. The UREA system may also be left plugged in with no ill effects.
  • Tire Size Calibration - This option allows for the re-calibration of the factory speedometer to adjust for non-stock sized tires.
  • Speed Limiter - This option allows for the adjustment of the factory speed limiter.

2011-2013 Chevy/GMC Duramax LML


     POWER LEVELS (DPF Removed)

Stock HP

     Stock HP
Mild: 40 HP      Mild: 50 HP
Wild: 80 HP

     Wild: 100 HP

       Hot: 150 HP




Type: Unknown Type

Vendor: Carolina Diesel Trucks

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