I dropped off my 8/04 build '04 to SF BMW today to have the new combo assist/bluetooth /TCU installed and the car re-coded. Will report back to the board on how it goes. It's the "brand new" combo unit ending in -056 ($615 from Crevier, OUCH!). I'm also having the snap in / eject box installed along with another bumper cell antenna. Wish me luck!