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Registered
Join Date: May 2003
Location: Manhattan Beach, CA
Posts: 2,350
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"After that the DME "occasionally" looks for the reference pulse to make sure timing is synched to TDC of the engine."
Not really! Once the engine starts the ref sensor is no longer needed. It can be left
disconnected until the next time the engine needs to start. This DME/Motronic
functionally exists both in the earlier BMW DME and the later similar BMW DME.
Disconnecting the ref sensor while running can help evaluate the speed sensor.
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Have Fun
Loren
Systems Consulting
Automotive Electronics
'88 911 3.2
'04 GSXR1000
'01 Ducati 996
'03 BMW BCR - Gone
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