Protune II

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The NEW ProTune II 4.0 software is compatible with 64-bit and 32-bit operating systems (Windows® 7 and later). It offers two levels for tuning your S&S VFI (Variable Fuel Injection) ECM (Engine Control Module), basic level for general tuning and advanced level for detailed tuning. The requirements of a specific tuning job and the tuner's level of skill should determine which level is used.

ProTune II 4.0

Download ProTune2 v4.0 

ProTune II Manual

Download PDF Manual

Unrestricted S&S VFI ECMs and Pro Tune II software must not be installed or used for tuning of pollution controlled vehicles.

These vehicles have specific calibrations to meet emission regulations. Modifying or installing an unapproved calibration or ECM is considered tampering and is punishable by law.