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Agency Power Intake Manifold Spacer Focus RS Boomba Intake Manifold Spacer Focus ST / RS Boomba Auxiliary Fuel Rail System Kit Focus ST / RS
Better torque curve Add power and color under the hood Add a secondary fuel source and color under the hood
Radium Engineering Port Injection Kit Focus ST/RS Full Blown Motorsports Secondary Fuel Injector Kit Focus RS
Provides more power and potential power Allows you to run more fuel