On my quest to find my lost boost after I installed my IPD DP (current consensus is the stock exhaust is creating too much back pressure...) I ordered a new Boost pressure sensor to see if that was the culprit. It was about $92 plus shipping from BV. It wasn't the problem, as I swapped it for my original with no change (original BPS has 12k miles). Now I have two. <p>I had previously bought IPD's HDTCV and so have my OEM TCV.<p>Based on another thread, I also built a little pressure tester consisting of some pvc, rubber reducers, clamps, and a male air compressor nib to check for vacuum and intake leaks. It seems to work reasonably well. <p>I also assembled a waste gate pressure pump. Setup consists of a small hand pump I found in my nightstand, a T, nylon tubing, and a small low pressure air gauge. It connects to the yellow TCV to allow you to set your waste gate opening psi. <p>I suspect that others may have or will have similar challenges. Buying a TCV or BPS is expensive and building these "tools" is something of a pain, especially if you are still diagnosing the problem. I'm willing to loan these bits out to those fellow SS members for the cost of shipping, to help in your discovery process. You are welcome to come to me if you want to use my compressor with the pressure sensor. <p>I wish I had an extra MAF, as I'd make that available too. Maybe someone else does. <p>Anyway, let me know if you are working on vacuum/ boost related issues and if you would like to try any of these parts or assembled tools and we'll work out the details.