Using full timing control and because we just finished it this spring and it is a stock bottom end he has been limiting the boost to 5 PSI. I think he will eventually turn it up a bit as it's addicting. I am also running a sing FiTech power adder system on my Dart with timing control. It's working great but took some tinkering to get it running correctly. I since have developed a rod knock and I am looking to replace my engine with a 408 stroker with no blower.