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Registered
Join Date: Sep 2007
Location: South Wales uk.
Posts: 1,048
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From memory, The DME relay completely disconnects the positive power to the ECU when ignition is off, so not sure how leaving the battery connected solves your problem, more likely a slight air leak somewhere, or AFM needs the tracks inspected as they tend to cause drop outs in the resistor track over the most used part of the track, had the same issue with mine, moving the wiper in the AFM to an unworn part of the track sorted the issue for me, also; inlet manifold bolts can creep loose over time, allowing unmetered air to enter the cylinders, so another possibility ?
Ant.
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