Of course, a modern two-stroke must live up to modern fuel efficiency standards, and the E-TEC 175 is Three Star certified, meaning it meets the California Air Resources Board emissions standards for 2008. Cruising at 4500 rpm, that translated into a 12.2-gph fuel burn. At full throttle (5900 rpm), we burned just a little more than 17 gph. Considering we were doing 50 mph at the time, which makes for nearly 3 mpg, that's pretty sweet. The reason is the E-TEC's high-pressure injection system, which ensures a complete, clean fuel burn. It atomizes fuel as it gets shot into the cylinder at up to 700 psi through a nozzle that "swirls" the fuel into the combustion chamber. Pressure is built via a magnetized coil.