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Thread: Manual bleed valve - increased boost in cold weather?

  1. #1
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    Manual bleed valve - increased boost in cold weather?

    Does anyone have experience of manual bleed valves holding more pressure as it gets colder? I set my new valve a few months ago when it was 25c, reliably getting 1.05bar. It's getting to -5c now and boost peaks at 1.2bar.

    It sounds odd to me. Any thoughts?

  2. #2
    Arrogant wankeler Slides's Avatar
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    Will happen with most mechanical systems. Higher intake air density results in more exhaust flow/energy while the diaphragm side forces are pretty much the same.

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