6.5L OBDI DB2 Swap Transmission Tune for 1994-95

Custom firmware that converts your factory PCM into a full transmission control module for 1994–1995 6.5L diesel vehicles.

Perform a mechanical DB2 pump swap, on a factory DS4 equipped vehicle, without the cost and complexity of standalone TCM systems or extensive rewiring.

This solution leverages your existing engine computer and reprograms it to manage transmission functions through a single throttle position sensor signal from the DB2 injection pump. Install a mechanical throttle pedal and cable, then let the refined code handle all transmission control—seamlessly integrated like factory equipment.

Eliminates the need for expensive aftermarket transmission controllers and custom wiring harnesses. Drop-in chip replacement transforms your current hardware into a complete transmission management system.

More details coming soon as we are entering our field testing phase with this exciting new project in the fall of 2026!