Asking the tuner gurus as I think you will probably have best knowledge of how the ECU works.
Want to swap a different (lighter) shell around my 3RB drivetrain. Since I have a complete running car, I am thinking of smoothing it out by dropping the sub-systems I don't plan on running before I do the swap. Does this sound feasible? FYI, current plan is into LX Gen2 (wind up windows, no central locking) and plan on swapping the loom and instrument cluster over into it. Things I won't need and plan on removing behind is ABS, airbags, aircon (will use Gen2 non-smart aircon - can't wait), central locking etc.
Does the ECU look for sub-systems, IE if stuff isn't there will it throw errors, or will it not notice? I imagine that the immobilizer module might be the biggest problem, ie if it can't contact it, then something bad must be happening, therefore don't start engine? (Although if physically possible I'm not against swapping the immobilizer RFID ring over if it simplifies things.)
Not done this before so there may be something glaringly obvious that I have missed, or will it be as simple as just identifying and then unplugging sub-systems?