The old ECU like on your car cannot be mapped unless you de-solder the PCL chips that contain the fueling maps and solder in new ones. Them PCL chips are one time only so professionals solder sockets so you can tune your car further. The ECU i have is of a rare, EURO 3 OBD car which was produced in a very short run- i only found 2 the same so far and i have sold hundreds of a4 ! This is EDC15 ECU and is easy to flash trough the OBD, no messing with soldering involved + it was set up for a VNT turbo anyway so it will be able to control any VNT turbo. Wiring loom is complete with vacuum accumulator, N75, etc. When fitting a PD130 turbo, the oil feed pipe needs replacing with the PD130 or AFN one as the turbo sits at different angles and locations. The intake and exhaust manifolds will require to be replaced and also the downpipe flange needs cutting and replacing with the AFN or pd130 one. You can swap the whole cat if you please, they are bolt on, although some where in 2 parts and some where in 1 part...I don't really no what to do, I thought it would be simple lol, and how do you mean simple remap? How much did you want?