N20 ECU Tune

The Weistec BMW N20 ECU Tune is a performance upgrade designed to significantly enhance the power output and driving experience of your BMW's N20 engine. Through extensive street and dyno testing, this ECU upgrade reliably delivers substantial gains in both the mid-range and top end of the powerband, ensuring top performance across all driving situations. This tuning process involves reflashing your original ECU, optimizing fuel, spark, and boost parameters for maximum efficiency and power. Key features include the elimination of the factory top speed limiter and a notable improvement in throttle response, providing a more direct and engaging connection between driver input and vehicle reaction. The result is a more enjoyable driving experience with considerable horsepower and torque increases. This ECU tune is specifically designed for the BMW N20 engine family. Vehicle application includes the 2011-2016 BMW Z4 sDrive28i models equipped with the 8AT (E89) transmission and the Turbocharged 2.0L I4 (N20) engine. Please note that this product is not street legal in all US states. Weistec also offers optional products like the Cypher Plus, and customers must confirm that the product is not intended for use on pollution-controlled motor vehicles. *Power gains are estimates and can vary based on specific vehicle modifications, fuel quality, and running conditions. The ECU tuning process is detailed on Weistec's website.