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Tuner in Training
I'm at a loose. Some times if you put low impedance injectors in a high impedance pcm you kill the injector drivers. They work for a bit then over heat due to running to many amps threw the injector drivers. You would have to measure ohms on the injectors then find the stock specs. Its so hard to fix a car not infront of you.
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Tuner in Training
I guess at least you know its a fulling problem and have made some progress. May be worth checking powers and grounds to the pcm at this point too.
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Potential Tuner
is there constant spark while cranking when it fails
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Tuner in Training
Can you look at injector duty cycle or ms on time in data? This will give you an indication that the pcm is indeed trying to turn them on if there are values in the pids.