When I get back from the weekend I should have another (4th) BPC valve waiting for me and hopefully unlike the other 3 I bought from Ebay this should be working:roll: . However all is not lost as I now have enough parts from the others to put together a working one as well as some came with broken disks and others with broken electomagnets. I'm still curious as to it's true operation though - all the info I have read seems to indicate that the valve cycles the air pressure from the turbo outlet between the actuator and the intake. However with the hoses connected as Saab and everyone suggests this is not strictly true. The valve simply blocks and then unblocks the passage from the turbo pressure side - at no point is any pressure able to bleed to the intake from the turbo outlet. Thus the only 'cycling' is between either the turbo and the actuator or the actuator and the intake. Now if you swopped the actuator and turbo hoses round then this cycling would occur - it would bleed some of the air away from the actuator to the intake. Has anyone tried this configuration?