I changed my battery and after doing so my electronics went funny, like when i indercate my radio turned off and on, things like that. so i had a look around, relised that an earth had broken off when i changed the battery. So i reattached the earth and now my car run's weard, like it idle's between 1500 and 2000 rpm now. I dont no if the computer in the VN does it but could the computer ajusted its settings while the earth was off, and it will reajust it now the earth is back on. Or do i need to go get a tuneup?