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My car has been misfiring quite a bit lately. I've replaced the plugs, all wires check out OK. Dumped about 6 bottles of fuel injector cleaner in, all injectors test at 13 OHMs. I recently replaced the ICM. I was told that it may have to do with the computer. I replaced the ECM about 3 years ago and have Vegeta's chip. Would it be likely that the ECM or PROM are the problem? What would be needed to hook up to a computer and read what is going on? I have no programming skills or experience