PDC45988101 1-SERIES (2004+) 2-SERIES (2014+) 3-SERIES (1998+) 4-SERIES (2013+) 5-SERIES (1995+) 6-SERIES (2003+) 7-SERIES (2002+) i8 (2014+) M3 (2000+) M4 (2014+) X1 (2009+) X3 (2004+) X4 (2014+) X5 (1999+) X6 (2008+) Z4 (2002+) Z8 (1999-2003) Allows you to maximize fuel economy up to 20% over the stock ratings. It also doubles as a valet mode to keep a driver (or even your newly licensed teenager) from being able to accelerate above a certain rate. Many of our customers say that city mode allows the vehicle to accelerate as it should have from the factory. It gives you the response of an &#034;old school&#034; throttle cable, with a 1:1 pedal-to-throttle acceleration ratio. Gives any vehicle the response and acceleration of a race car, allowing you to get up and go when you need to without waiting for the ECU to catch up to your foot. Perfect for spirited driving or on a race track. Please use with caution!