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.
08 335xi Pre LCI Sedan - Titanium Silver - PTF Tuned - M Tech Rear - OEM Black Lines - MMW One-Piece Front Lip - AMS FMIC - BMW PE - BMS OCC - ER CP - Koni Sport H&R Sport Front - Koni Sport w/ Swift 60mm rear springs, Swift Thrust Sheets and OEM Thrust Bearings - ContiContact Extreme DW