I'll second that...Cal has always made himself available for questions on my XFI/XIM setup. Even when the source of the problem tends to be self induced and not caused by the actual units/program...(i.e. like me not having the XIM harness pushed in all the way into the box and then couldn't figure out why it wasn't starting.....but in my defense it was pushed in far enough for the power light and crank light to come on, ..but just not enough to fire the coils....lol - hey it happens....)