NavKal™Pro is a factory software written by Navistar designed to allow for electronic control module (ECM) programming on Navistar® & MaxxForce™ engines.  The most common use of NavKal is when the mechanic needs to to a program blank module when an existing module has failed.  Also this software allows for any calibration updates issued by Navistar to be installed into to an existing control module.  These NavKal updates help keep your truck running at peak performance.  These updates are likely to help minimize certain fault codes, smooth engine performance, etc.


  • Blank Module Programming
  • Update Module Calibrations
  • Read & Clear Fault Code
  •  Vehicle Information Display ECM Software Version & Upgrade Available
  • OEM Controlled Parameter Updates

Engine Coverage:  

  • DT466 / DT466E / 570 series
  • Maxxforce DT
  • MaxxForce 5
  • MaxxForce 7
  • MaxxForce 9
  • MaxxForce 11
  • MaxxForce 13
  • MaxxForce 15
  • VT275 & VT365
  • Navistar N9
  • Navistar N10
  • Navistar N13

Software Limitations (dealer only actions):

  • Emission Changes Involving Emissions Label Replacements
  • Horsepower Upgrades
  • Engine/Exhaust Brake Additions
  • Engine Replacement Programming
  • Component Serial Number Updates

About Us

Diesel Diagnostic Equipment was founded in 1999 on the principal of providing quality diagnostic equipment to the professional medium & heavy-duty truck technicians. 


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