The most difficult part on the jb4 for me was getting that damn power wire out of the green box. I couldnt believe how much trouble that little ba*yard gave me! Plumbing the USB through the dash was a small challenge as well but once you do it you're golden. Nice to know how things are sorted in the car too.
E90 2008 335xi - TiAg - AMS FMIC - BMW PE - BMS OCC - ER CP - KW V3 - Vorshlag Camber Plates - AG M359 18" PSS - Alpina Flash - RB PCV Valvle - AFE Intake - Walbro LPFP