I spoke to a bmw dealer about these yesterday and they reakoned I would need some race electronic package fitted as well, but reading this thread suggests that it really is just a fit and set up in DDC settings. Is it as simple has fit and play. Or was my dealer correct. The bloke certainly gave the impression he knew what he was on about. If it's something I can fit myself then it's buy buy buy..can you lads advise please. Cheers Gary