DemisA4

This is a two-part question. I've been having fuel pump problems so I sent my 99 30 valve 2.8 A4 to the dealer. The engine is modified with the pes supercharger and the stuff that comes with that an ecu ect. The problem is they think that the ecu is not communicating with the Fuel Pump. Any ideas on this because if I have to buy an ecu, which it looks like I'm going to have to, I may still have the problems because to run the supercharger I am going to have to have the ecu modified again. Also how much am I looking at for an ecu. Just wondering because I couldn't find it on the oem part sites. Also has anyone had the same problems with the ecu on a car without the supercharger because it may be that it is an Audi problem, not one related to PES. Thanks so much

RKA

the fuel filter? Seems rather unlikely that an ECU would be the cause of a fueling issue here.

DemisA4

I will check that out but I think it is the ecu