It can be converted. I have a guy local to me that runs an escort gt with a mustang maf on a t3 60trim...definately quite a nasty little surprise from an escort.

 

I was talking about a cheap turbo setup - $$$.. Dont wanna spend to much money on a old car like this... My first car..

Mayby i just have to convert my car to MegaSquirt, my org injection system sucks a little under low speed (finecontrol of throttle difficult...)
Jesper Andersen

 

Using SDS to control a single injector seems like a good way to spend too much money!

I can't answer your question about the escort and MS - you need to search msefi.com for that - probably the the MSnSE section. I can tell you, after 3 MS projects, that the hardest thing to get setup on MS is the ignition system. If you can do fuel only, it's much more simple. I've seen several people use it to control alternate injectors based on boost pressure and A/F via wideband. If you can put a tach on that car, you can use MS to do alternate injector control. I've seen it used this way for a turbo 3.0 toyota.

Ping me if you specific questions about how to do fuel control for a turbo escort, I know someone locally that has one.. I don't know the specifics.