If your taking her to Mark at M.A.D for Closed loop fuelling (Presumeably on Autronic management?) then he will be able to do everything you need for the MOT so stop worrying.

technically you need a catalyst fitting (Std 92> Exhaust) but this really neds to come back of to have any reliable power unles you go for teh new generation of performance catalysts and of course you will be having a lambda sensor installed in the downpipe to feed the ecu with closed loop info on fuel mixture.

Hope this helps.