Price is firm, item is in great condition, used for 1 year without any issues. Had to take it out of my M2 because I'm getting too many speeding tickets.
From Dinan's website...
Benefits of the DINANTRONICS Sport Performance Tuner for BMW N20/N26 & N55 Engines (F Series ONLY):
+ Up to +30 HP and +50 lb-ft (N20), Up to +30 HP and +40 lb-ft (N55)
+ Bluetooth smart (Android and iOS Compatible)
- Live boost monitor
- Multiple power settings to choose from (Sport, Sport+, and Race).
- Valet / parental control modes (-3 PSI)
+ Quick, easy, and discrete installation
+ Automatically detects engine type and loads appropriate mapping
DINANTRONICS Sport Maximum Gains (N20): Up to 30 HP, 50 lb-ft of torque.
DINANTRONICS Sport Maximum Gains (N55): Up to 30 HP, 40 lb-ft of torque.
SKU: D440-0010
DINANTRONICS Sport is the boost controller for the masses. Its simple design/execution allows for easy installation/removal that can be performed in a blink of an eye and yields results you will be sure to feel, and enjoy, from the get go. Coupled with Bluetooth capabilities right out of the box that allows for user controlled adjustability and a live boost monitor to keep track of the action its a value proposition that is unequaled in the marketplace.