I have question about the gyt-r tuner. If you own 2 yz450 do I need 2 separate tuners? When dealing with programmers for my truck the tuner is vin specific and can only be moved between matching vehicles after turning one back to a stock setting. Is this the case with these bikes? Also and I know this might not be the place for this question (if someone wants to show me where to find this thread please do so) but what is the best tuner? I see power commander has one available which has been proven in the street scene for years. All info is appreciated.