Gen 7+ Soft., ECM flash upgrade, no key

PART# 77003U

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Software and firmware upgrade for the Gen 7+ ECU. Pulse width modulated outputs added for progressive timed control of nitrous oxide and other PWM controlled devices. Custom MA MAP sensor configuration up to 3.5 BAR (41 psi) Map sensor capability. Perfect for hi-boost applications. Auxiliary output drivers upgraded to provide higher current capability Addition of several staged injection strategies specifically for 4-cylinder applications.


  • Updates ECM to the latest version.
  • Pulse width modulate modulated outputs added for progressive timed control of nitrous oxide PWM
  • Perfect for Hi boost applications


Emission Code3
Product TypeDFI and service parts
Part Number77003U


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.


    *Free Shipping & Handling only offered to the contiguous US on orders over $100.

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