Voltage Drop Help

[59rah]

I had a similar issue on my LSX using a Holley ECU. It ended up being not grounding the engine directly to the negative battery terminal. I installed the ground wire and voltage drop went from 10-10.5V while cranking that would not allow the engine to spark or start (before the ground wire install) to above 11.5V, and the engine fired right up. I'd recommend installing a ground wire to the engine block and ensure everything is tight (positive and negative).