Emission Tests at 2000 RPM

[John Chia]

I went through a bit of an ordeal with emission tests with my 95 SE-R.
I could pass everything but the driving test in HC and NOx.  It finally
passed today on the advice of Dan from London on the se-r-canada list.
He suggested that the reason I was failing was because the engine runs
in open loop (no O2 feedback, rich mix) while below 2000 RPM.  He also
theorized that EGR is not doing anything below 2000 RPM.  Can anyone
confirm that?

He was right somewhere because the examiner did the test in 2nd gear at
~2750 RPM and it passed!

John.