Quote:
Originally Posted by biker2k
when there is vacuum there is no boost...
it when the vacuum goes away that it closes and builds boost.
an yes its the on off feeling, I did not know lt4 had electronic control..
I wonder if there is a way to make that work?
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The electronic bypass valve is how GM limits max boost and how they bleed off boost once the throttle shuts. Once you hit max boost psi the programming opens the surge valve and bleeds off boost.
And yes you are correct, I had the vacuum reference backwards.
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