The one that was in there was electric and SUXORED. Aside from having no numbers (just a + and - to denote boost and vacuum), it had lag. Yes, the fucking gauge had LAG. You'd hear the turbo and would feel the boost in the seat of your pants before the needle would budge off the full vacuum mark. The needle would stay at "full boost" between shifts and for almost two seconds after you let off the throttle. This isn't just a bad gauge, it's the way every AllTrac boost gauge works. They suck ass. If I had to do it over again, I would have used a black face gauge, but this one was free.