Hi Guys

I've bought a 2007 RS4 engine from a wrecked car that comes complete with all sensors / ancillaries.

I plan to use this in my Ultima.

Is there any point in me keeping the ECU? My previous experience of OEM ECU's is that they are pretty much useless if you don't have the original keys for the car it came out of, and that I will run into problems galore when I start removing things like a/c and p/s, etc. as the ECU will continue to try and look for them.

I guess that the question is... how flexible is the RS4 ECU - can it be re-mapped?

Thanks