if you opt for the gotech mfi management system they offer a modified inlet, and fuel rail at jamsport, which allows you to continue running the escort rs turbo head. This is the cheaper option as it uses the dizzy to determine engine timing. however the better version, gotech pro or even pro x you will need a flywheel and a crank sensor, you could still get away with leaving the head on from the escort and just use the modified rail to use injectors. my escort rs turbo is going into jamsport next month for gotech pro to be fitted as my rs already uses fiesta efi. going for around the 250 horse power mark.