I just wanted to say I enjoy reading all these threads. I recently purchased a 2009 135i with a Sport Package. I'm not sure if it has the M-Sport, because I don't have the M wheels. I'm new to the BMW family and all these little mods you can do. I've read so many I don't know where to start.
I'd like to change the kidney beans to black first, but as for performance, where should I start?