In the world of Engine Control Unit (ECU) modification, enthusiasts and engineers often encounter a critical crossroads: replace the factory wiring harness entirely or modify the ECU’s internal pinout to suit a new application. The latter is what is known in the community as a "Patched Pinout" design.

: If a designer needs to move a sensor input (like a MAP or TPS sensor) to a different physical pin, the software detects this hardware change. Automatic Code Patching