The boost pressure will hold up to 15 psi, but once 22 psi is achieved it bleeds off rapidly to zero. If any further info is needed I would be glad to add. Thanks.
My friend has a 14 6.7. I am having issues with turbo boost pressure. When I step on it hard my turbo boost goes to 22psi and then drops to zero. When I get off the throttle and step on it again the boost goes back to 22psi and then drops right back down to zero. The truck has had the ***...