I have recently upgraded my head unit from an RCD300 to a RCD330+. My car is a 2006 model. I ordered a simulator to stop battery drain but it is not going to arrive until end of may. Today when I turned my car on it stuttered quite bad (battery loosing power I imagine). After reading many forums I have decided I want to do things properly and update the canbus gateway. Please could someone tell me the exact canbus gateway I would need to purchase and where I can get one pre coded that will stop the battery drain ? Thank you for reading