Some guy told me the other day that if you leave a computer controlled vehicle without a battery for some length of time that it will have problems when replugged back in. Interestingly enough, my friend has a 3-VZE that did not have a battery for a year while it sat. Get a battery plugged back in, start it up, thing runs like crap. Sure, could be a gas problem but this thing runs beyond just having a little varnished gas. And it ran perfect when he parked it! Now I don't know if the computer could have anything to do with it, but I would like to narrow down the possibilities so he can get back on the road. Anybody have an experience with this? I personally think the guy that told me this is full of it becuase the functionality of the EFI is burned into the computer and thus can never be taken away, but is there perhaps some things that the computer could "forget" that would affect the motor's performance?