Anybody know where I might find out some details on how the ECM uses the data collected from its sensors to use on its controlled items. Got tp be out there somewhere, How do these ECM programmers know how to reprogram the ECM'*??

Is the Bellhousing bolt pattern on a 1988 Vin C engine considered a metric pattern??

Thanks

PM DrJay and jr's3800 in that order for both your questions.