MicroSquirt.com read only forum (Jan.15,2018)

this is what i tried. ALTHOUGH i have not wired in the reference pulse high and low yet. currently the older MS controlled module is sending the reference pulses. i think im going to try and patch the ref pulse wires into the factory ecu and just run the MS controlled one to the ms and then to ground. that way it follows along with the schematics for the DIS/HEI setup.

i have been informed i may need to install a FET signal booster into the reference pulse line cause im sharing it with the MS. is this true? it seems like a plausible concept.

Any reason not to let Megasquirt control your idle ? And try wiring direct into the tacho ?

If those are the only two functions you need from the old ECU that is.

James

well, i figured it out. heres what i did.

i used the factory ignition module in the wheelwell. i removed the signal for reference pulse from the mocule thats controlling the ignition to the ECU and ran it JUST to the megasquirt and grounded the low line. (just like it shows for GMDIS setup pages) i then ran all the wires from the factory mocule to the ecu and pigybacked the VR sensor wires so that it would have a sensor signal from the crank. works like a charm.

rockin! I figured something like that would work