Vic

Can any of you clever sods tell me whether it is very important to bridge the engine computer when you are doing the timing on the EL engine or whether you just time the engine without bridging it?

EDXR8

Yes, bridging the EEC diagnostic pins is the only way to accurately set the base timing.

Vic

The base timing is just for when you are starting the car?

EDXR8

No, it's the base reference point for the timing. By bridging out the diagnostic pins, the EEC runs the timing at the minimum point which it thinks is 30 degrees BTDC. What ever you set the base timing at, the EEC thinks it is 30 degrees and then when running normally, adds its normal timing curves to. If you don't set it with the pins bridged, you don't know how much timing the EEC is adding at that time so it is not accurate, but some people do it.

Vic

Ok.

So when I bridge the EC and it starts revving the engine, ( hunting ) it is also zeroing the data that was in there before, right? And after it stops revving, I set the timing and then pull the bridge off the EC, correct?