I bought my bike used and have found the o2 sensors aren't connected. I'm suspecting that the bike had a tuner in it but doesn't anymore, probably removed before I bought it. Should I reconnect them or get another tuner. All it's got is pipes and back plate is removed behind air filter. Not planning any other mods in the future. I just want the bike to run right. I bought the bike from an independent dealer and now i'm finding a lot of things missing. Beware of the small independent dealers!