the ecu in an neon is different than the ecu in an eclipse (same motor, different ecu). the pins and connections will ALL be diffrent. I can hoop up a s-afc in a neon, I would just need the schematics for the mfi system. I am sure that it is possible, I just haven't tried yet ;). If you can find some schematics of your MFI system, or have access to a electrical service manual, then instal should be a piece fo cake.

have fun!