Originally Posted By Saskabusa
Originally Posted By Supercuda

As for the effects on what ever, there should be NO changes, that is the purpose of the ballast to maintain a constant primary current with variation in engine speed. That means a stable ignition with no variations related to engine speed.




The ECU is a transistor that grounds the coil to give you the high voltage spark. The primary current has to go to ground through it. It will have some limit to how much current it can safely handle but I don't know what that is.


This would be my concern.Is the ECU up to the task of carrying the current flow through the primary with a full 12-14 volts on the positive side.Current flow through that transistor will be noticeably higher at 12-14 volts than at 9 volts. The coil will likely be fine....will the ECU? Time will tell.