The jet pump fi 54 is designed for standard engines as well as those achieving over 7000 rpm. By increasing the power and torque to 5%. Its use significantly increases the speed of exhaust gas flow in comparison with the traditional exhaust system, thus improving the exchange of the air-fuel mixture in the cylinders. By increasing the power and torque to 5%. Its use significantly increases the flow rate of exhaust gases in comparison with the traditional exhaust system, thus improving the exchange of fuel-air mixture in the cylinders.