Each year, India sells a large number of tiny engines (two-wheelers). Its emissions account for a large proportion of India's total pollution. Improved fuel mixture control and fewer emissions from small engines could result from a better understanding of Turbo charger nozzle performance and modeling. A commercial computational fluid dynamics package might be used to generate a three-dimensional, totally turbulent model of compressible flow across a complex geometry venturi, such those found in tiny engine Turbo charger nozzles. The results of the CFD simulation might be used to figure out how different flow obstacles affect the mass flow rate and static pressure at the fuel tube's tip. This could be helpful in determining the amount of pressure lost in the neck. An examination of airflow overtheturbo charger nozzle venturi would be performed by putting the fuel tube at the venturi's diverging nozzle and for various throttle valve locations. At various throttle opening stages, the performance oftheturbocharger nozzle would also be investigated. The turbo charger nozzle body would be rebuilt in the second phase of the project, with two throttle bodies replacing the standard throttle. A flow field analysis with a changed design would be carried out. In addition, a thorough comparison of the existing and updated designs would be carried out. © 2023 Elsevier B.V., All rights reserved.