Good afternoon,
I'm working on a '14 E92 controlled LV3 (4.3) in a swap, 3rd gen Camaro. I've been fighting with a No Spark issue for a while, and it's got me . I originally suspected that my crank voltage dropped too low for the ECM, so I've isolated it by running a separate "crank" battery, and supplying everything else with another battery, and that didn't solve the issue. I need to ask, if you had a no spark issue, what would you log to help diagnose it? I am currently logging Crank and Cam sensors, MAF, Spark Adv., Run/Crank voltage, RPM, and Inj Duty. To me, the novice, all looks OK, but alas no spark. Fuel pressure is good at 60+psi. Any help is appreciated.