i have not had that issue either. i know the water will take the path of least resistance, but it will go out overboard and still go into the stinger and waterbox too. you can hear the change in exhaust tone. Until now i had not heard about restricting the pisser. ( if i understand your setup correctly) i will have to double check mine. I know i dont have a restictor. FYI my flusher is between the head outlet to the pipe chamber so the head and cylinders gets cooled and into the exhaust while on the hose.Goodluck