Quote:
Originally Posted by Calum
For all that money, why not just run a vacuum pump?
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The main cost of the setup is for the AOS which really is for blow by management and ensure clean air is recirculated, so that part of it would still be needed even with an active vacuum source. The vacuum source in this passive setup when in boost is the turbo, which was already there, and the manifold during idle/cruise, so a matural source of vacuum as well. the rest is the pcv valve which is not that expensive, hoses, clamps and check valves, so no big cost items there. It would likely be a even more complex setup, as the vacuum pump needs to be controlled depending of the engine load/rpm, needs to be powered, etc.
This being said It’d be interesting if anyone has had experience with an actuve setup to share... I recall reading that some high end sports car do have such setups - BMWs possibly.