The air box takes about a minute to remove. Definitely makes the install 100x easier with it out of the way.
I've put about a thousand mile with the tune and still no problems at all. The car simply hauls when you want it to. When i have my car in sport mode and stab the throttle there is zero delay and the car just takes off like a bat out of hell.
I was able to get my traction control light to go off with my Xdrive F10 while i was rolling and then floored the gas pedal.
2014 LCI 550i M Sport | 3D Design Front Spoiler | BMW Performance Black Kidney Grills | BMW Performance Trunk Spoiler | BMW Performance Gloss Black Diffuser | Painted Reflectors | Wincos 30% Tint | Supersprint Quad Exhaust | AC Schnitzer Springs | MORR VS8.2 Brushed Finished Wheels 20x10R and 20x9F | Michelin PSS Tires 245/35/20F 285/30/20R | M550d 16mm RSB |||More Photos of my car here|||