Have you ever looked into MegaSquirt to control that engine? I have heard a lot of good things about it. It’s a Do-It-Yourself programmable electronic fuel injection controller that is very reasonable priced. (i.e. from $200 to $500 not $5000+) It is an Extremely versatile kit for nearly any engine and can even provide ignition control with MegaSquirtnSpark. Just go to
http://www.msefi.com/ It is a lot of reading but it is worth it. I plan to install a MegaSquirt on to my 250 in the future but that is yet to come. Hope this can help.
