WBM346Z Build Journal

The car as I bought it unfortunately only came with a Tape Deck based BMW Business Radio. Which in 2014 is extremely dated, so I started looking for an upgrade. I am not hugely into after-market sound systems and the car already had the Harmon-Kardon kit so I was happy to stay with that and only wanted to upgrade the Head Unit so I could use more recent technologies. It was very important I be able to play music from easier sources such as CD's or USB stick and it needed to have Bluetooth connectivity for my phone. I also didn't want an obviously after-market Head Unit. I had done this previously in an Audi 90Q20V and regretted it every day I drove it. After a bit of research I found that there was a whole swathe of units that were OEM styled the most popular of these being the Dynavin and AVIN units. The AVIN unit seemed more popular on the forums and was developed by a community member: AVIN Avant-2 Launch Thread on E46Fanatics Luckily about the same tim...