My '91 103 reads 20 ma with KOEO, so you may be on to something.

An interesting EHA observation I made one day: when warm, as soon as the engine is started, the EHA reading then jumps to the last setting it was at before it was turned off (in the 1-2 ma range, if Lambda is set pretty well). So it seems to have a mamory of where it should be with a warm engine, even before it goes closed-loop. From that, I deduced that setting the lambda either rich or lean to aid warm starting may not help much, because the EHA cuts right in immeditely on a warm start and mimics the previous closed-loop operation.

DG