This is just a prototype but it is working like it's supposed to. I'm trying to use off the shelf parts so anyone could build one. It's connected to the stock waste gate pressure cannister. It keeps the cannister from seeing any boost pressure until the set pressure is reached. Then it opens and allows the waste gate to open. It's been on the truck for a couple of days and no codes so far. When I know there's no issues I'll list the parts and where to get them. I only have about $25 into it. Tell me what you think?