Yup. Disconnected it and it dropped just like yours. Plugged it in came back up. I called Jim wolf and just got off the phone. They do program the bigger injector EPROM for a slightly higher idle between 850-900 rpm. He said u can check with consult to make sure ivac is working properly if its at 45 to 50% if it's 10 % than you would want to turn down the idle screw. I dont have a consult or understand what that means but I figured I would tell you. As long as I know it's "normal" a little high I feel comfortable.