>Have yet to drop cat converter as the bolts are extremely frozen
>
>Any new insights?

Checking operation without the catalytic converter is a lot cheaper than
purchasing another ECU, even if you have to cut off the bolts or
whatever.  Alternately, perhaps you know someone with a known good ECU
that you could try on a trial basis???

Best wishes,

Tony

Anthony L. Mourkas
Hampden, Maine, USA
1984 Vanagon Westfalia
1990 Passat GL (for sale)
1991 Jetta Eco Diesel