Just a small note, the Rotec carb, is not a fuel injection system, nor fuel injector when compared to what a modern day automotive fuel injection system is. It is a knock off of the Ellison series of carburetors. Their web site does say " fuel injection", if you read down the page a bit. When Monnett came out with his AeroCarb, a POSA knock off, is killed the sales of the EFS-2, so Ben Ellison ceased production of that particular carb. Ellison Fluid Systems still manufacutrers all the other carbs.
http://www.rotecradialengines.com/TBI/TBI.htm http://ellison-fluid-systems.com/injectors.shtml Steve Bennett