Dinan Performance Engine Software Kit for BMW X5 4.4i E53 2005-2006 (DIY)


Performance Engine Software extracts additional power as well as improving drivabiltiy. The software safely raises the rev-limiter by 100 rpm, which enables you to carry more road speed in each gear, as well as optimize shift points. The top speed governor has been removed, which enables the cars to reach their natural top speed. Revised EML tuning provides improved drivability by speeding up throttle response.

*Dyno results when combined with a K&N free flow air filter (available at additional cost).

Note: When ordering please ensure you have your VIN ready for the checkout process. It is crucial that it is typed in accurately and completely at that time.

While we offer the DIY kits in the stage 1 form, the additional stages will need to be purchased and installed at an authorized dealer as they require hard parts to function properly. 

Special Note: 

Only for 2004 - 2006 models. K&N free flow air filter element recommended for optimum performance.


  • 2004-2006 BMW X5 4.4i
Product Specifications:
Labor Hours/Installation Hours 0.50
Emission Status 50 State Emissions Legal
Max HP Gain 8
Max Torque Gain 6 @ 6600 RPM*
Included Notes OBD2 to Serial Adapter, Serial to USB adapter and Serial Cable.
Required Items Windows 7 or newer Laptop with a USB connector and an internet connection.