OVERVIEW
Stage 5 Engine Software is for use with the High Flow Cold Air Intake, Throttle Body, Air Flow Meter, and Intake Manifold, ensuring optimum performance and drivability.
Dinan Performance Engine Software unleashes more powerf from your BMW 540i E39 by re-programming the fuel mixture and ignition timing parameters of the engine management system. Furthermore, the software safely raises the rev-limit, giving your BMW a broader powerf band and greater road speed potential in each gear. Significant gains are also achieved at part throttle, making extra powerf available where you spend the bulk of the time driving. The top speed governor has also been eliminated, enabling the vehicle to achieve its natural top speed. Not compatible with the 540i (E39) from 1997-1998.
Dinan Cold Air Intake System, Throttle Body, Air Flow Meter and Intake Manifold are required in order to run the Stage 5 Performance Engine Software.
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