The harness enables control of port injectors

combined with additional material in critical areas

G40-900 Compressor Turbine Inducer Exducer Trim A/R Inducer Exducer Trim HP: 500-900

and Alpina B3 Bi-Turbo

BMW E46 M3 S54 Long Tube Header System 11247586492 The harness enables control ofBMW E46 M3 S54 Long Tube Header System Stainless Steel Performance Upgrade Maximize the power and sound of your BMW E46 M3 with a high performance long tube header system designed for the 3. 2L S54 engine. This system enhances exhaust flow, improving horsepower, torque, and throttle response. Built with precision engineered 1 3 4" primary tubes, it is a direct bolt on to your existing axle back exhaust for a seamless installation. Product Features: