I was told that the coolant connection to the turbo is optional and that if I don't have coolant lines hooked up, just let the engine cool before shutting it down.
Anyway, I have decided that I want to have coolant running thru my turbo. I am thinking of putting the turbo in series with the heater core, at the outlet end.
The question is, is there a constant flow of coolant into the heater core at all times? even when not using the heater? I've heard that some cars have a valve that prevents hot coolant from flowing thru the heater core when the heat is not turned on, is the Subaru system similar? Thanks for any help.