I have a S5 NA coupe and the MOP is leaking, throwing two MOP codes. (27 and 37, i think). Cant find a decent used replacement and the damn dealership wants to charge me 1400 for a new one. Car's in limp mode right now. I was wondering if there was a way to premix and somehow trick the ECU into thinking the MOP is working.

 

I have an MOP(several actually) I could sell you. PM me and we can work out shipment/payment. And it won't cost you 1400.

There is no easy way to trick the ecu on S5's.

 

There is no way to fool the ecu. Need a working one connected so ecu sees feedback. If the omp went south, it might have taken the ecu with it. Many stories around after replacing the mop the ecu needs to be replaced because of burnt circuit.