Dinan Stage 5 Performance Engine Software - 2000-2003 BMW X5


PART# D903-44X5

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Stage 5 Engine Software is for use with the High Flow Throttle Body, Cold Air Intake, Air Mass Meter and Intake Manifold, ensuring optimum performance and drivability. Dinan Performance Engine Software unleashes more power 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 power band and greater road speed potential in each gear. Significant gains are also achieved at part throttle, making extra power 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.


  • More Power (with throttle body, intake, air mass meter and intake manifold): Max gains of +33 HP and +34 lb-ft TRQ
  • 50 State Emissions legal; CARB EO # D-176-35
  • Top speed governor removed
  • Rev-limit increased
  • Improved throttle response
  • Smooth and predictable power delivery


Dinan Point Value3
Emission Code1
Factory Rated HP290
Factory Rated Torque (lb-ft)324
Labor Time (Hours)0.5
Max HP Gain33
Max Torque (lb-ft) Gain34
Product TypeEngine Software
Required ItemsDinan Throttle Body (D760-3440A), Cold Air Intake (NLA), Air Mass Meter (NLA) and Intake Manifold
Part NumberD903-44X5



This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

Tech Resources

Not compatible with the X5 4.4i (E53) from 2004-2006. Dinan High Flow Throttle Body, Cold Air Intake, Air Mass Meter and Intake Manifold are required in order to run the Stage 5 Performance Engine Software.



    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.