Originally Posted by VQStryker

I stopped a little before 4,000rpm and was seeing 3.xx volts so im not really sure.

Also:

check your waste gate lines, BOV line, and all fitting to make sure they are still connected and no holes or anything of that nature are present in the lines.

This is one of those things where I wish the person was closer so I could just have them come over and help them finnd the problem. I really hope you find whats causing this and lmk if you need to know where the fittings are that you sould check.