Madazbpt Posted September 12 Report Share Posted September 12 Car is a Mazda Familia turbo BP1800 I can't seem to get my car running with the toyota 90919-02240 coils, it was previously running with evo 1 coils running in wasted spark. I've wired it up to retain the wasted spark configuration, but Im lost if I need to change ignition Dwell Edge from rising to falling? I've changed a few dwell timings to go lower but no luck other than a backfire. Do I need to change the crank dwell ext? I thought I had to so I lowered it to 3ms it was 10ms, was just worried about burning out coils, this is the table before I changed them. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 12 Report Share Posted September 12 I dont think any tof the settings you show there would prevent it from starting so I suspect you may have some other issue. Dwell edge should be rising for these coils. Note this setting terminology was changed to "spark edge" in newer ecus which is the opposite so that may cause some confusion if you are comparing to a settings in a newer ecu. The evo 1 coils would have had a separate ignitor between ecu and coils, have you removed this? I would drop the dwell a little from what you have in that pic, my suggestion below, and also drop the crank dwell ext to 5ms. There is an ignition test function in PC Link to confirm the wiring is ok. Quote Link to comment Share on other sites More sharing options...
Madazbpt Posted September 12 Author Report Share Posted September 12 I got it running, had the wrong earth and power. But my tacho doesn't work, is there additional wiring I need to do? Was working with the evo 1 coils. But I am only using the 3 wires for the coils not all 4. Is the unused one meant to be for the tachometer? Quote Link to comment Share on other sites More sharing options...
Madazbpt Posted September 13 Author Report Share Posted September 13 This is the previous ignitor from the evo1-3 set up in my mazda. And it never had a wire for "TAC" in it, yet my tachometer worked before installing the toyota coils? How was it getting its signal I don't believe any of my AUX inputs are being used for tachometer either. Quote Link to comment Share on other sites More sharing options...
Adamw Posted September 14 Report Share Posted September 14 What is the tacho wired too? It may have been wired to one of the coils originally? Quote Link to comment Share on other sites More sharing options...
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