i recently picked up a st165 and i have a bosch blow off valve that came with it, i know it hooks up right between the turbo and the intercooler but what else does the BOV need to hook up to?
Is it a bypass valve or BOV?
It definitely needs a vacuum source.
You can tap one from behind the intake manifold.
Then, you need to reroute it back to the intake, anywhere between AFM and turbo.
