Selling my wide band SEFI Fast system. Includes ECM,harness, O2 sensor, and software. I had the firmware updated about 4 months ago to the latest version. Asking $1300 or best.
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Yes this plugs into the stock harness where the ecm plugs in. I don't have any pics of the ecm. Basically it is a small square box that will easily fit under the dash or seat.