D903-44T53 – Dinan Stage 3 Performance Software Upgrade F10 550i for BMW 550i & xDrive F10 2011-2013

Part Number: D903-44T53 Category:


Get the most out of your Dinan® Free Flow Exhaust upgrade and receive an additional 10 horsepower from the combination of the Performance Software and exhaust upgrades.

  • 500HP and 581 ft-lb TQ when used in conjunction with The Dinan™ Free Flow Exhaust system.
  • Downloads through the BMW diagnostic port, the same way BMW loads software
  • Top Speed Governor Removed, you decided how fast you want to go
  • Factory Matching Warranty Coverage (4year/50,000 mi), no sleepless nights or being scared to visit a BMW dealer
  • Full Map Rescaling, for drivability from idle to wide open throttle and everywhere in between
  • Properly Returned Fuel Mixtures, to save you gas and protect your engine
  • Retain All BMW Factory Engine Damage Safeguards

Additional Information

Get the most out of your performance upgrades from the combination of the Performance Software and your Dinan parts upgrades. Software upgrades are specifically designed and tuned for The Dinan upgrade.


  • Max HP Gain: 100 @ 5000 RPM
  • Peak Horsepower: 500 @ 5000 RPM
  • Peak Torque: 581 @ 3500 RPM
  • BMW Factory Rated HP: 400 @ 5500 rpm
  • BMW Factory Rated Torque: 450 @ 1750 rpm


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