Free shipping on orders over $100 Details

Commander 950 Pro Software Upgrade

Commander 950 Pro Software Upgrade and ECU Firmware Upgrade

PART# 534-191

Be the first to write a review
$214.00   Suggested Retail
$191.95   Your Price
Free Shipping
In Stock  
Add to Wish List


This is an upgrade package to migrate to the Pro Software. The Pro Software includes a host of features that add even more flexability to the Commander 950 ECU. Requires Windows 98 through XP. Not compatible with windows versions newer than XP,


  • Internal Data-Logger
  • Programmable Load Scale
  • Programmable Inputs and Outputs
  • Programmable Target O2 Voltage
  • Programmable O2 Compensation Limits
  • Wideband O2 integration
  • Deceleration Fuel Cutoff
  • Timing Trim vs. Coolant temperature


BrandHolley EFI
Emission Code5
ModelCommander 950
Product TypeEFI Software
Part Number534-191



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

Tech Resources

This upgrade is included with the Wideband Oxygen Sensor upgrade P/N 534-188. Requires factory service.

    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.

     X  Roadkill Buick Sweepstakes
     X  Roadkill Buick Sweepstakes