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In motorcycles, Engine Management systems (EMS) are used mostly in high end models. However, increasing demands for improved fuel efficiency and tighter legislations for reduced emissions have made it inevitable to adopt EMS, instead of the carburetors even in small gasoline engines motorcycles which are already quite fuel-efficient. Today's system cost is significantly high and comparable with passenger car applications and success in emerging markets due to fun-to-drive aspects is likely to be limited to premium segment. So there is an obvious requirement for minimized system cost along with smart system solutions. For reducing the number of sensors and cost, highly accurate methods have been developed to eliminate sensors like barometric sensor and cam timing sensor. An engine management system has been developed for the unique problems of one cylinder, high performance engines.