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.

Stage 1 Features:

• More Power: Max gains of +9 HP @ 4500 RPM and +11 lb-ft TRQ @ 2000 RPM
• 50 State Emissions legal; CARB EO # D-176-35
• Top speed governor removed
• Rev-limit increased
• Improved throttle response
• Smooth and predictable power delivery
  
  
  Not compatible with the X5 4.4i (E53) from 2004-2006.
  

Stage 3 Engine Software is for use with the High Flow Throttle Body, ensuring optimum performance and drivability.

Stage 3 Features:

• More Power (with throttle body): Max gains of +15 HP and +17 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
  
  
  Not compatible with the X5 4.4i (E53) from 2004-2006.
  
  Dinan High Flow Throttle Body is required in order to run the Stage 3 Performance Engine Software.
  

Stage 3A Engine Software is for use with the High Flow Throttle Body and Cold Air Intake, ensuring optimum performance and drivability. 

Stage 3A Features:

• More Power (with throttle body and intake): Max gains of +24 HP and +26 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
  
  
  Not compatible with the X5 4.4i (E53) from 2004-2006.
  
  Dinan High Flow Throttle Body and Cold Air Intake are required in order to run the Stage 3A Performance Engine Software.
  
  
  
  

Stage 4 Engine Software is for use with the High Flow Throttle Body, Cold Air Intake and Air Mass Meter, ensuring optimum performance and drivability.

Stage 4 Features:

• More Power (with throttle body, intake and air mass meter): Max gains of +28 HP and +30 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
  
  
  Not compatible with the X5 4.4i (E53) from 2004-2006.
  
  Dinan High Flow Throttle Body, Cold Air Intake and Air Mass Meter are required in order to run the Stage 4 Performance Engine Software.
  
  
  
  

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.

Stage 5 Features:

• 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
  
  
  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.