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  1. Fastfewest

    MPI supercharger blow off valve

    Just checked and I’m getting 6 for a vacuum. How stiff a spring should I have it that?
  2. Fastfewest

    MPI supercharger blow off valve

    I read that you have the sled idling and you can adjust the spring until the valve starts to open. Once it opens you close it just a bit.
  3. Fastfewest

    MPI supercharger blow off valve

    Noticed my mpi blow off valve does not open. Pulled it apart and everything looks good. I am running 6lbs of boost could the spring be to stiff? I did adjust spring all the way out but no difference.
  4. Fastfewest

    supercharged nytro pulleys vs boost

    What would boost roughly be using 23T bottom and 31T top at 4500ft.


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