OK, this is my first foray into the wonderful world of EFI so I'm pretty green as far as that's concerned. I know when I replaced pipes on my carburetted bikes, I had to rejet to get them to run properly. Is adjusting the fuel system an issue with the 650? Does the EFI just cope with changes or is there some black magic afoot here? I'm thinking of getting the Leo Vince system- could those who have it let us know if it really is Plug n Play or are there other details to tweak as well?