To complement
thecarp's wu,
fuel injection is and has been available on
motorcycles for some time. Mostly on
sportbikes though, even the six cylinder Valkrye is carb-based. I've heard of bikes that, after you tear the seat off, you can see a
fuel mix
ratio on an
LCD display to tell you if it's running
rich or
lean. Wow.
When I first heard rumor of bike-borne fuel injection I called up my former bike
mechanic brother. He verified it is real, but "
scary". I
concur; this seems like more
electronics and mystery then I care to deal with during a weekend bike
tuneup. Providing accurate fuel mix to six or eight cylinders in a car or truck is one deal,
EFI (electronic fuel injection) can have that. Providing it to one or two high performance can-not-fail cylinders is another.
Update: And according to
sbeitzel,
BMW K series has been doing fuel injection on bikes since the early
eighties.