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Engine RPM feed

Posted: Sat Mar 31, 2012 5:11 am
by xmas6
Hi All - I need to find a reliable source for the engine speed to install my S/H Prins system.
The car is a BMW 520i with a twin vanos M54 engine.
I was going to use one of the cam sensors or the crank sensor but i`ve been told these are notoriously `flakey` om BMs.
Next thought was to use the rev counter signal.
Can anyone advise and help me identify which signaland wire to use?
Cheers Neil

Re: Engine RPM feed

Posted: Wed Apr 11, 2012 11:53 am
by mak-uk

Can you not use the coil?