I'm not sure which one of the two sensors that is, but I had to unhook both of mine to get the bike to keep running. When I had the sensor on the back hooked up, and the lines to the carbs unhooked (so that I could hook up the carb stix) the bike flooded like crazy. When I unhooked the plug from the sensor the bike ran fine.I have a question, how did you get your bike to start without the IAP air press sensor hooked up? I can never get mine to start without it hooked up.