Sorry gentlemen, I have been slow to address some of the questions here....
There won't be any difference in performance between the V1 and V2 kit, especially on a stock block. The main reason this change was done was to accommodate the new turbos that Precision is releasing. These new units simply don't have the smaller E compressor cover available. I did not want to be left behind due to this change by the turbo manufacturer.
According to Precision, unless you are going to run over 30psi of boost, there is no difference in performance between the E compressor cover and the SP compressor cover. There is no tuner in the world that has a pair big enough to run 30+psi on a VQ, the most I have ever seen was 25psi, and that was on E85. There are many factors attributing to this...but let's just leave it at that.
I just wanted to make sure that you guys understand that there wouldn't be any performance gains by switching to the V2. There are nice benefits when it comes to oil cooling (1 less oil line), and intercooler pipe routing, but that is about all.
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