Quote:
Originally Posted by ls1nova71
Never heard of an ESS? Where did you see that? What wires are you talking about?
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I was using lt1swap as a reference for the pin locations on the ecm. It's mentioned that pin 10 on red connector is the ESS signal.
Then on a different page labels 2 other pins as vss high and vss low...
This is pulled from the page for the ESS
Pin 10 - White - Engine Speed Signal - Tach signal. Stock programming of the PCM will output a 4 cylinder tach signal. When I program the PCM, I can change this signal to a 8 cylinder. This way you don't have to modify your tach.