Have just returned from a visit to my beloved but stricken Sportster in Caerphilly. After trying (and failing) many attempts to re-synch/re-programme the ECU, EWS and key, we had decided to completely re-wire it using a replacement M52 engine wiring loom to see if this would solve the problem.
Having discovered that progress over the last year has been rather slow (the replacement loom was still unopened in its box), I have decided to try the MS41 route suggested above (thanks, Mike).
I intend to source an E36 1994-95 engine loom, with a Siemens MS41 ECU, delete the EWS, re-wire, and get the engine started again!
Steve's point above about the 2.8 hopefully won't apply as mine is 'just' a 2.5. And I will worry about the exhaust Vanos later.
Will post progress as and when (!)
Tim
PS If anyone wants an M52 engine loom...
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