My mate has just put a turbo engine (out of his own RS) into a XR3i Cabriolet and last night took it out. Very fast until it hits 90mph when it just stops at that and won't go any faster.

Is it because the ECU's are limited to 90mph in cabriolets and just needs over riding or because the fuel pump cant keep up with the pressure from the engine/turbo?

HELP!!!!!

 

No idea but try posting the question on

 

Or none Scooby related....