Just one of MANY tips and tricks in my engine swap manual. Below, an excerpt. It is not complete, as you need to get to this location within the cluster, which is detailed in the manual. But, you don't even need a computer... (and it seems the 12-cylinder cars use a different coding plug)
Test 2: Engine Data - This display is an "engine factor" value that is stored in the coding plug. The instrument cluster processor uses this factor in addition to the "TD" signal from the DME control module to process and display tachometer RPM based on the engine installed. For EXAMPLE:
*ENGINE FACTOR 2 = 4 CYLINDER
*ENGINE FACTOR 3 = 6 CYLINDER
*ENGINE FACTOR 4 = 8 CYLINDER |