Hi ,
We've just put a 2.1 zetec turbo into my brothers s2 rs turbo. It was running a 2.1 zvh beforehand.
Only things changed apart from 8v to 16v head is the inlet manifold.
We can start the engine but wants to rev at approx 1500/ 2000 rpm. There's no cam sensor, so I can't see what is causing the really fast idle. It's running ofam ( mega squirt ) management.
Has anyone got any ideas?

cheers mark