My 60 reg 143 ST is affected by having the EA189 engine.
Not sure exactly how the defeat routine (it's not a device as it's part of the ECU firmware) works, but likely underfuel when rear wheels are stationary to lean up the mixture.
ECUs are simply pulling in data from sensors - wheel speed, engine load, throttle position, manifold vacuum, fuel temperature, pressure etc. etc. and enables each injector to fire for x duration and pressure at z time, so putting in the logic of an anomaly (rear wheels stationary) and underfueling would not be that hard to do...
I have a bluefin map on my Exeo (very pleased with it) and have the option to remove it via the handset.
The question I do have, I guess for bluefin, is will the map still apply or will I have to buy a new one?
I.e take the bluefin map off, reverting to standard, then try and re-apply the bluefin, but the map removed will no longer be the same so might trigger a checksum error and not re-apply the map - dang.
I feel a mail to Bluefin customer services coming on.