Hello all, just got myself an audi a3 8v 2013 sportback after loving my q5 3xsline model but needed something for the city. i was not aware of the diference with the mmi systems because my Q5 has the 3g+ so i never had any problems with it. The a3 has the RMC system i think(i have the cd reader with 1sd slot and 'audi multimedia' text on it in the glove box) i dont have bluetooth or Navigation. on my center console i only hace the car/sound and radio/media buttons i found the entier MIB system for under 180eur used from a salvage yard (screen and main unit) can the modification be made without too much problems, i only need the bluetooth the navigation not so much. I am very new to modifying my cars as this is my second one, all in am willing to spend 500eur if possible. all tips or referals are very welcome and please correct me on anything that you think is not correct.