Has anybody ever sniffed the control line from the PCM to the module? I want to find the info getting sent that controls the spark advance. Just curious if its a timing bit, a hex bit, or an analog voltage even (yes I have no clue!)
I'm assuming its a timing bit (spark triggers on reciept) rather than actual coded info.
I'm getting sick of pulling and flashing to change stuff a few degree's. So I'd like to either be able to change it at the module on the fly so I can find the optimum setting.. or use that instead of tweaking the spark tables