Special Note: Only for 2003 - 2005 models. K&N free flow air filter element recommended for optimum performance. Dinan Engine Software safely raises the rev-limit by 240 rpm, endowing your BMW Z4 3.0?with a broader power band and greater road speed in each gear. The software also removes the top speed governor, enabling the cars to attain their ?natural? top speed. Reprogramming of the drive by wire throttle system speeds up throttle response, dramatically reducing the delayed response to throttle inputs exhibited with the stock programming.
*Dyno results when combined with a K&N free flow air filter (available at additional cost).
