So excuse my ignorance, I have done a search and didn't really find the answer I'm looking for. I'm sure this subject has already been discussed so maybe someone can point me in the right direction. I recently installed the gen3 ejk and unplugged the connecters from the o2 sensor and installed the plugs that I was given from dobeck. My buddies that I ride with asked me why I had my o2 sensors disconnected and I didn't really have an answer. So why is it that you have to unplug the o2 sensor when using this product? I understand that you can't just unplug them but why can't you leave them plugged in? I know that theirs are plugged in with their v&h fuel pack that they are running.