Detailed technical information about this great little engine is in the document below.
ULpower Aero Engine Design
Excerpt from the document:
The UL260i engine is standard equipped with an electronic motor management system. The engine control unit (ECU) ensures the engine is operating at optimum efficiency at all speeds, under all loading conditions and at all times. Manual choke, carburetor icing problems, carburetor heating and the associated power loss is a thing of the past.
To continue reading see the pdf below: