Bioethanol is a type of renewable energy. The use of bioethanol as a fuel for motor vehicles can be done by mixing certain levels of bioethanol in gasoline. The addition of bioethanol to gasoline can increase the RON value and become different from engine specifications on the market. The objective of this study is to find the optimal engine settings for RON 88 Gasoline fuel with an additional 60% bioethanol. The study used a 150 cc spark ignition engine tested on the Dynamometer Engine Test bench by changing the Ignition Timing and Injection Duration of the engine using ECM. The results of this study indicate that by changing the Ignition Time to 28° BTDC and reduce the injection duration by 10%, the torque value increases by 2.98% and the power generated has increased by 3.07% compared to normal settings.