I thought the Power Engineering Fiesta did it the opposite way to what you say Steve, I have the Classic Ford article on it somewhere (it was the A-Z tuning guide where they combined "S" and "T" by using Chris's car as an example )

I thought he had the supercharger blowing through the turbo (and thus spinning it up) and then an extra throttle body operated by rpm activated switch opening the turbo up to atmosphere as otherwise the engine power was limited by the air flow through the supercharger, which was less than the flow through the turbo on boost - if that makes any sense

Oh, a chap called Stu over at my home forum has done it quite successfully with an old boat anchor jellymould tortoise shaped shed btw

http://forums.interford.co.uk/showth...threadid=24991
http://forums.interford.co.uk/showth...threadid=10463