The PPEI LML SOTF ECM Tuning is a very popular option for someone who is looking to be able to switch between five (5) custom tunes on the fly. As we know the 6.6L LML Duramax motor is a very strong contender in the diesel market right from the factory bringing 397 HP and 765 TQ with ease from your right foot. However, it’s plagued with the unfortunate factory limitations such as the limp/dead pedal that results in lack of low-end torque and throttle response. At PPEI we were able to optimize the overall experience of the 6.6L LML Duramax by putting our magic touch too this motor. We were able to eliminate the low-end dead pedal and bring the truck to life by creating a custom calibration specific to how we at PPEI prefer our trucks to perform. The new and improved PPEI tuned 6.6L Duramax has all the characteristics that this motor was missing out on from the factory. While still maintaining a smooth but progressive power curve the motor is now capable of up 500+ RWHP with the ease of the PPEI SOTF ECM Tuning on the EFILive AutoCal or Flashscan.

When creating custom calibrations PPEI takes all driving styles into consideration while designing a sporty drive-ability while maintaining the fuel efficiency and improving the overall performance all together.

The PPEI SOTF ECM Tuning comes with the option to select between five (5) tunes with the turn of a switch without having to reprogram your vehicle for each power level.

RWHP Levels over factory rated HP:

  • 30 HP – Heavy tow
  • 60 HP – Light Tow
  • 100 HP – Street
  • 150 HP – Race
  • 200+ HP – Maxx Effort

Transmission Tuning Details:

  • Earlier Converter Lockup
  • Increased Line Pressure
  • New Shift Strategy to Keep from Lugging
  • Easier Downshift with Less Throttle Input

Torque Management Tailored Features and Benefits:

  • Enhanced Throttle Response
  • Smooth Driving Characteristics
  • Improved Top End Performance



  • Standalone FlashScan <-> supported controller read/flash.
  • Store tune & log files to internal memory.
  • Read & clear DTC codes.
  • High speed data logging.
  • Display data while logging.
  • Read & program calibration and operating system data of engine controller.
  • Automatic saving of trace files.
  • PC <-> FlashScan <-> supported controller read /flash.
  • Store tune & log files onto PC.
  • Read and clear DTC codes.
  • High speed data logging.
  • Gauges & charts display in real time.
  • Read & program calibration and operating system data of engine controller.





AutoCal Specification


Systems Requirements


  • EFILive AutoCal interface.
  • Vehicle Cable (J1962).
  • PC cable (USB).


  • SAE J2284 CAN and SAE J1850 VPW protocols.
  • Built-in LCD screen.
  • Upgradable bootblock and firmware.
  • 8MB internal memory, 6MB (approx.) available for tune/log files.
  • Vehicle Input Voltage - Min 9V, Max 14V.


  • PC or laptop capable of running Win7 or higher.
  • Optical drive.
  • USB port.
  • Color screen with 1024x768 or greater resolution.
  • 200MB of available disk space.



Please allow 2-3 business days for order fulfillment.