I am trying to get a better understanding of how the ecm processes the signals sent to the ecm by the optispark. I have found a posted hac on this web site, carprogramer, but there is not much in there about the optispark. I have the 8051 computer, does anyone know which registers corespond to the hi res and two lo res inputs to the ecm or a way to trace them out. A more complete hac would helpful also if there is one availible. Thanks for your help.

 

The forum will not allow mw to attatch anything. PM me your email and I'll send what I have. It is a complete binary dump. Not just a bin file for editing in Tunercat.