OK I am new, so I dont really know to much running the box for timing can you please explain, I know the box dumps fuel, and is a boost fooler but running it for timing??? Dumping the top charger??? Dont know, again please explain? I think it was pre set at 40 or 45 psi, I havent had a chance to mess with the wastegate if that is what you are talking about dumping, the wastegate. I havent had a chance to pressurize the system but everything is brand new I checked the boots before I installed them and after running it I went back and tightened everything one more time. One of the bands that was sent with the kit was to big and I had to make sure it went around the ridge part of the piping that connects the bottom to the top turbo, the intake for the top turbo piping to be exact which I know I will have to change it and I am in the process of changing it but didnt figure you could build up that much pressure in that part of the system, seems to me it would be more suction than pressure.