I'm gonna try getting a bung welded onto my LICP and see if that helps. I'm thinking the MBC and BOV seeing the same boost pressure (i.e. manifold pressure, after the TB) is causing some sort of weird loop: the BOV opening, dropping pressure in the system and making the MBC ball/spring close thus shutting the wastegate, which instantly causes boost to rise again. As this happens, the pressure in the IC piping is slightly higher than in the manifold, causing the BOV to open, dropping pressure in the IC piping and ......ah fuck it I'm gonna go buy a FORD
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