It came in with a Kenne Bell, was at about 7 psi. The only problem, is that a supercharger pushes the peak hp rpm up, just like a bigger cam does, then you put VVT in there, and the peak hp rpm gets a little too high for where I think the stock rotating assembly should rev to if you are really trying to take advantage of the VVT pwer gains. Here is the dyno graph from that vehicle, you can see I let off at 7200 rpms and the power was still going up at a pretty good rate, just didn't want to push the stock lower end that hard.