My latest installment:

After that last test a couple years ago, I decided to rebuild the engine, and found: some cracked ring lands, and a disconnected vacuum line that probably didn't help my last readings any.

On the new (about 2000 or less kms) rebuild today, I let the ECU do it's thing for the A/F ratio, pulled 7* of timing at idle (idle at 1175) and at 2500 rpm.

Todays results:

2500 RPM: HC 68 (limit 200) CO 0.65 (limit 1.00)
idle : HC 125 (limit 200) CO 0.70 (limit 1.00)


I'm good with that!