well I set about today tidying up my engine bay a little, removed the disconnected AC pump so that's saved a couple of kilo's of weight, I then set about and removed the MBC (Manual Boost Controller) as I thought it wasn't doing anything, turns out it was just open fully and allowing max psi, turns out stock these only run 5psi and the turbo is only capable of 12psi, oh well we live and learn, tomorrows job, re-fit MBC and hopefully get it to hold 10psi