Very strange idea I can see what you want to achieve but it will be a litle more difficult than what you explained.

Now I am assuming you have your high/low boost already sorted out and with this other solenoid you only wish to have it control your BOV.

BIG problem is that your BOV requires both boost and vaccuum to function! If you fit a solenoid in the manner you are describing which will block off your line to the BOV on low boost it will be blocking both vaccuum and boost which means that there will be no boost to hold the BOV closed while your engine is on boost (with me?) i.e. you BOV will be forced open on boost and leak as it will only have the spring tension to hold it closed.

When you let off the throttle you will have no vaccuum to assist the opening of the BOV which is going to restrict (probably not keep completely closed though) its opening and hence the loud venting.

A slightly more elaborate setup could achieve the outcome you desire, but why f$%ken bother? If you are trying to make a sleeper out of that yellow car in your avatar you are pushing shit up hill, it doesn't exactly look like sleeper by any stretch of the imagination .

EDIT: oh yeah, if your BOV does not open when you back off the throttle after being on boost you will get compressor surge, which is that gay flutter sound, so you will only get rid of one noise and replace it with another (both indicating you have a turbo)

[Updated on: Wed, 29 June 2005 04:55]

Quote:

why dont u get one of the "good bovs"and put a heavy spring in it so it wont go off until say 12psi

OK ndgcpr if you really want to do this (or if anyone else wants to this is how you would set it up so that it actually would work.

Instead of having a single line (hose) going from your manifold to the BOV you simply have that line branch into two with a "Y" connection and then rejoin to form a single line again with another "Y" connection just before the BOV. Now in the section that now has two lines fit a small one way check valve to one line so that flow (boost) can pass through to the BOV. On the other dual section of line you have made fit your simple open/close solenoid.

Now the system will work because when the solenoid is closed the BOV will be able to have positive pressure on both sides of the BOV valve when the car is under boost as it normally would (this is passing through the check valve) but when you back off the check valve will close and keep the spring loaded side of the BOV under positive pressure and hence keep the BOV closed as much as possible (the back pressure created from the throttle closing and turbo spooling will be forcing against the spring tension and positive pressure on the other side of the BOV valve).

When you switch the solenoid to open the BOV will resume normal function and the check valve will not play any part in it's operation.

That is how to set it up but I still wouldn't bother

If I have not explained something clearly enough let me know.

EDIT: there is a better but more complicated method of doing this as well, but it needs two solenoids or a three barb solenoid to work.

[Updated on: Wed, 29 June 2005 23:21]