my LB7 is worth 270 thousand bought used the only thing on it is an AFE air intake. At full throttle smoke came out of the exhaust. It was anemia! I couldn't pass anyone without a LONG open space or road! I bought the Big Head as a first step in building up Banks to a 6 gun setup on a budget. The smoke went away immediately and it seemed more bouncy and also improved MPG (alcohol. No more smoke). Thought I set it up correctly, even called the banks with some concerns which they said were unfounded. Then I found a programmer and idash 1.8 for sale elsewhere. Installed and found max boost is 13.5! I adjusted the wastegate lever and am now getting 21 PSI! This is because the wastegate spring must be under load to keep the wastegate closed during boosting. I have found that if you see the wastegate bracket flex a little when the gate is fully CLOSED then it is properly adjusted! I love this controller and my truck looks like a rocket now!