Everything you need to implement Dinan Stage 1 programming on your n20-based BMW (requires electronic waist gate). This was taken off of a 2015 BMW 228i xDrive Convertible.
When installed, this tune removed turbo lag, and made 2nd gear a great experience! This was the best upgrade I did, and the most expensive.

Price paid for hardware, install, and programming was $1,827, so this is a significant discount.