No power under boost sr20

[Mexik]

So I have an issue where, when I hit about -10psi on my boost gauge my car will loose all power and it'll start backfiring, the turbo will still spool up and dose but I don't have any boost pressure or power whatsoever. Ice recently replaced the bov and hose lines to the bov, done a boost leak test and all the hose clamps are tight, the vacuum lines from the turbo to the boost tee and intake aren't leaking either

If anyone has any ideas please let me know
Video of what's happening in link

https://goo.gl/photos/W2xgbv84Dxpeeob18

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