I installed a boost/vacuum gauge this past weekend, it's liquid filled to reduce flutter in the needle and all. I cut into the same area (tube coming out of the intake manifold) that the Newsouth DIY on this forum said to, but my gauge isn't Newsouth. I had to compensate by buying an extra type of T-fitting that would reduce from 1/2" tubing to 1/8". Anyway, when I go out to my car in the morning, the gauge reads "0". I start up and I get between 20-22 in.Hg vacuum at idle. I drive about 70 miles to work every day, and when the car has just warmed up, it will read (only under load around 3000-4000 rpms) a boost of about 11 psi. But most of the time I drive it reads about 10 in.Hg vacuum. About 1/4 of the way to work, the vacuum starts reading around 20 in.Hg at about 65 mph at 2500 rpms. Then when I get to work and I let the turbo cool down for about a minute or two, the vacuum reads almost 30 in.Hg at idle. What's going on here? I can't understand why, as the car warms up, the gauge is reading higher vacuum and less boost. I have run through a lot of possibilities in my head, and I can't put my finger on it. If I had a leak, there would be less vacuum and less boost showing on the gauge. Has anyone had this happen to them? If so, how did you fix it? Please help me out.