speak to motorsport developments.
try and catch kenny, he's the EEC Guru...
also if he's unable to help, try speaking to Mike R or Ahmed (just do it n dont ask :P)
ps the ST24 runs EECV and the bloody thing's locked the transponder key too!

so you cant just nick another EECV ECU thats off a turbo car (altho saying that there arent any cyl turbo cars in this country running EEC that i know of... lol)
you might have to go aftermarket...
www.s8ecu.co.uk try having a word with simon, he may be able to sort something out for you...