Yamaha YFZ450R Big 3 Engine Upgrades, Dasa Exhaust, Fuel Customs Intake, and PEP Stock ECU Reflash Test:
November 17, 2022
More power, Broader Power Curve, and Better Throttle Response for the YFZ450R! Most sport ATVs ever produced enjoy significant horsepower gains by addressing the Big-3 engine upgrades. The Big-3 refers to utilizing a freer flowing exhaust, air intake system, and the necessary jetting or fuel mapping changes to match the increased airflow. More stringent EPA restrictions have made things a bit more complicated with the introduction of an Air Induction
