I have a 94TT Auto with an SBC-ID boost controller. That controller has a little boost time graph so I can see boost throughout my whole pull. Everytime I hit it from a stop my boost falls to 0psi or even vacuum during the 1-2 shift. Is this normal? I know traction control limits boost during shifts but during all other gear changes (2-3, 3-4) my boost only falls a few PSI. Is there something wrong with my car or is that normal for autos.