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From what I understand it allows the DME to read and store the cold to warm, value for the MAF sensor heat. throttle body sensor and pedal sensors (0). Reset the learned map to factory value. If the battery goes down slowly to dead or there is a spike these values can be corrupted because they are in volatile memory. Not doing this can mess with the performance for about 30 miles.
I shorted a wire in my relay box and it screwed up my throttle positions to the point that I was going into limp mode and throwing throttle codes. This corrected the problem.
I was told to have all other electrical systems off when doing this. Fan, Temp unit, Radio, lights, doors closed no alarms dinging, etc.
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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