Originally Posted by foundryratjim

Having read every thing here ... I think people are thinking way too much about what the efi system here doesn't have. This is an engine that doesn't have to meet epa standards ( at least not yet). I worked for twelve years as an experimental test technician for GM doing combustion analysis and spark and fuel mapping tests. This type of purpose built engine does not need all the special accessories that an automotive engine has. A spark and fuel map can be developed to make an engine perform very well (look at the motorcycle aftermarket) with out them for rc use. I would would think the 3D pilots will love the throttle transition this could give them. As a side note , we would still be running carbs on cars if the government had,t required cleaner emissions and better fuel economy. It cost a lot of money to develop the initial systems. I would think this technology would be picked up by the military for some of their drones if they haven't already. I will be looking for one of these at Toledo. I have a Great Planes Wagstaff Extra in the box that needs an engine. I don't mind buying one the first ones. I have always had good luck with Horizon stand behind their products.