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The present paper focuses on a system and an appropriate controller concept for an advanced air management system of gasoline small engines. In motorcycles, now a days engine management systems (EMS) are most commonly used. However, increasing demands for improved fuel efficiency and tighter legislations for reduced emissions have made it inevitable to adopt EMS parameters in small gasoline engines motorcycles which are already fuel-efficient. During steady state operation stringent requirements of modern air/fuel ratio (AFR) control strategies, the accuracy of models needs to be better than ever. The model inputs play vital role in deciding the accuracy of AFR control and engine performance. In control software design components mechanical stop limits will be fixed by considering the worst-case tolerances (includes mechanical tolerance, manufacturing tolerance, mounting tolerance, electrical tolerance etc.).