Vicoor wrote:The IGF signal is an ignition confirmation. In Toyota school they called it "I Got Fire".
It's a square wave back to the factory ecu when the ignitor in the stock coil works.
If it is not present the stock ecu will shut down the injectors to prevent flooding the catalyst with fuel.
For a MS application you should be able to just not use those signals.
Or you may be able tie the IGF terminals from all the coils together and use that signal for a tachometer
Cool! Thanks a lot! So IGF signals could simply be ignored.
So in overall, all IGT1,2,3,4 will be going to Spark output of MS
The GND will be grounded at ms's gnd pins.
12V will be applied when ignition switch is on (Im using the OEM electrical harness)
That looks perfect. But last question is; the signal going from MS to COP (SPark X output), dont it need a signal gnd? I know there is already a ground but I though it was for the 12V current...