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  1. Common Engine Swaps and Related Discussions
    WRAPPING UP MY NEW/USED TRANNY INSTALLATION AND FOUND A VSV (VACUUM SWITCHING VALVE) WHICH APPARENTLY HAD BEEN BROKEN AND NOT FUNCTIONING IN PROBABLY QUITE SOME TIME. THE VSV IS BOLTED TO THE SUPERCHARGER CASE JUST BELOW THE COOLANT OVERFLOW JUG. IT APPARENTLY ACTIVATES THE AIR CONTROL VALVE...
  2. MKI, 84-89 NA & SC
    Hey everyone, I've been slowly getting my car ready to pass smog. I've replaced my federal intake mani with a California one, but there are some sensors that I'm unsure what they connect to. I also replaced the TVIS, which did not have the VSV at all. I checked every gallery on PBase and google...
  3. Supercharger / Turbo FAQ
    My '88 SC has had a NST pulley for a few years. It was installed when I had the car put together for me by a friend who has much more expertise with this car. I have had no boost gauge and no ABV mod. Just now did the ABV mod. At present I have no way of measuring boost, other than subjective...
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