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Re: Random injector misfire cel
So this *only* happened after you grounded out the door pin input?
If not, start with the basics. Replace spark plugs, wires, coils, ignitor, one at a time. Then caps in ECU if you want...any other mods on the car...s-afc or anything? I had one that seemed to work fine via the interface, but didn't actually do anything to the maf signal.
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