DME / Engine Management

Step-by-step procedure for opening the DME control unit (and KLR on turbos), identifying and replacing the performance chip, and reassembling, including critical notes on chip orientation and ESD precautions.

Procedure for removing and installing the DME control unit (and KLR anti-knock unit on turbo models) from early under-dash and late passenger footwell locations.

Full-size DME wiring diagrams for the 944 Turbo, showing the complete wiring layout for the Bosch Motronic DME control unit.

Wiring diagrams for the normally aspirated 944 DME. Note: these diagrams are sourced from the 911 DME and are described as similar but not identical to the 944 layout.