Here are the symptoms, when the boost reaches 18 psi it completely drops out to zero and then only comes back to about 8 psi. It feels like all of my boost just disappears, but I still have all of the fuel. It also smokes like nobody's business when this occurs, I am guess because of the lack of air. Any idea what is wrong with my truck! :doh: Thanks in advance fellas. Let me know if you need more info to help me.