Rotec
Looking at this option as well. Waiting to see how Pete Howell is getting along with his installation.
It's not fuel injection.
It is a floatless slide carb, and is really very old technology. There have been a few variations of this design used on automobiles and fixed power installations over the years. Motorcycle carbs are sliders with floats, and share the metering system with floatless designs.
The Ellison throttle body is another slide carb, and Aero Vee also has one.
There are a bunch of RV's equipped with the Ellison, and you will find there users quite satisfied with the installations.
I have seen the Aero Vee on a Sonex aircraft, and the owner was very pleased with it.
There seem to be many positive points for it's use. Simple design, no float to stick, less service, lower cost, and it's basic design is well proven with many, many flight hours under it's belt.
Drawbacks seem to be the need for a primer for easier start, as the slide carb has no accelerator pump, and an increased tendency for icing, so a hefty carb heat rig is in order. Cable routing needs a little extra planning. They are also sensitive to specific airbox or plenum installations. As far as I can see, none of those concerns are at all insurmountable for installation in our aircraft. Vans has an airbox for the Ellison installation that I'd be willing to bet would be a head start for the Rotec installation.
Bet your bottom dollar Pete will have it all figured out real soon!!
Regards,
Chris