BMW (E60) 540i 545i 550i ECU Software

Stage ONE  $695+WHP+WTQSpeed limiter removedImproved throttle response
  

HEX Tuning software is delivered as a proper "flash tune” meaning that the data area within the ECU which is responsible for the power management and engine safety is re-calibrated to increase horsepower and torque without compromising long term reliability. Each new application begins with dyno testing to measure and plot the factory power delivery in order to track the changes as we increase engine load values and enhance torque management to arrive at a smoother, more powerful driving experience! Additional features include removed top speed limited; increased rev limiter; improved throttle response; smoother power delivery.

Disclaimer- This product is not compliant with the California Air Resource Board and not for use on public roads in California.This applies to any aftermarket product that does not display a CARB EO#. Power ratings are subject to conditions and dynamometer model used.