To be, or not to be, that isn't the question but it's what jumped from my
fingers...

Here's the question (as well as the embedded problem)...the van has always
had a problem with CO2 being in spec.  I've never been able to get it down
to 1.5.  I was speaking with a local VW guru who told me that all the FI
equipped motors had an O2 sensor, except that mine doesn't.  The
supposition here is that a PO swapped out the current non-O2 manifold for
the prior O2 equipped type.

I don't buy any of this, but it's worthwhile to pose the question to the
group, maybe I'll get a clue to my unsmoggable issues from someone as
well.

Thanks,
Jack