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      04-05-2018, 09:27 AM   #32
ilivas
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Quote:
Originally Posted by BunkerJ View Post
I stand corrected on our issue now that I think about it. In our case, it's highly unlikely that we're getting compressor surge. It's very likely valve flutter that we're getting. If you're getting during WOT or after WOT, then I'd call it compressor surge. This only occurs at low boost in my case, which is causing the valve to bounce. Normal and not harmful
That flutter is compressor surge. Since it’s only at low boost, it’s not as bad, but still harmful.

Many high hp turbo cars get low boost compressor surge because the springs are so stiff in their blow off valves because they need to hold 50 psi of boost so during normal driving and low boost the valve will not open.
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