Analysis exhaust emissions (CO, CO<sub>2</sub> and HC) on FI motorcycle with variations in ignition timing, injector timing and fuel variations

This study discusses changes in the value of CO,CO2 and HC levels of exhaust emission on FI Motorcycle with the use ECU Programmable (4 variation of ignition timing and injector timing) and use 3 variations fuel in every treatment. The purpose of this study was to determine how much influence the use ECU Programmable and variation of fuel on exhaust emissions produced by the research object. This type of research is experimental research. The object of this research is the FI Motorcycle. The lowest CO and HC level produced by FI Motorcycle with the use of a Programmable ECU is obtained in the treatment at ignition timing of 7°BTDC and injector timing 350°ATDC using Gasohol E30 fuel, while the lowest CO2 level is obtained at the ignition timing treatment of 3°BTDC and when injector timing 350°ATDC uses Pertamax Turbo fuel, where the results obtained show significant changes after going through a comparative test using the T test with a significant level of 5%.