Someone here (or on MogTalk?) found a repair service for the T16 ECUs at a sensible price. Unfortunately, I can't remember whom and that information would have been passed on when I sold the '97 +4.
Graham (G4FUJ)
Sold L44FOR 4/4 Giallo Fly '11 MINI Countryman Cooper D All4 '90 LR 90 SW