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Engine Tuning – Overview

Current overview of all available tools for engine tuning.
Clicking a button or picture displays additional info about the product.

CAUTION (applies to the USA)

All calibrations included in the Diag4Tune software are for Race Use Only and not to be used on public roads. Installation of these calibrations will cause your motorcycle to be non-compliant under U.S. EPA, California, and other emissions laws, rules and regulations.

Available tuning methods

more info about download software

Blank ECM Flash

Tuning Components


Available tuning methods

Available tuning methods

(quick link)


  • The tuning system focuses on Harley-Davidson engines equipped with DELPHI EFI (diagnostic communication J1850 or CAN)

Advanced tuning | Professional tuning | Easy tuning


Blank ECM Flash

Blank ECM Flash


    • This function is used to flash a new blank ECM

Tuning Components

Tuning Components – description

(quick link)


  • The tuning system is based on diagnostic system DIAG4BIKE.
  • AFR Tuning Monitor | Throtle control limiter | Installation set Lambda (MINI)

Communication interface DIAG4BIKE | Software DIAG4BIKE | Tuning dongle | Smart Power Bench | Safety precautions for SPB


Download – Overview

Download – Overview

(quick link)


  • Current overview of all downloadables for motorcycle diagnostics and tuning.

Actual software | Brochures – Overview | User manuals


Last page update: March 12, 2019