HI guys, so i recently purchased an '06 golf gti, which i am very pleased with. its has, as standard the RCD300 stereo, ideally i would like to upgrade to an RNS510 but i understand there are issues with battery drain for certain cars and that i could possibly need a new canbus? how can i find out for sure and what costs are related to changing the can bus and re coding etc.
any help would be greatly appreciated. thanks in advance