GReddy BOV Where to route the vacuum hoses?

[Obsessionw/Boost]

You should get rid of your stock bov. Get caps from Advance Auto Parts and cap it. With that bov, you are going to hear a whooshing noise constantly, from 1500 rpm and up, it's going to be recirculating air through the stock bov. When you get rid of the stock one, the car will pull better and breathe alot easier.
It will also be loud as hell.

 

[OneJoeZee]

You should get rid of your stock bov. Get caps from Advance Auto Parts and cap it. With that bov, you are going to hear a whooshing noise constantly, from 1500 rpm and up, it's going to be recirculating air through the stock bov. When you get rid of the stock one, the car will pull better and breathe alot easier.
It will also be loud as hell.

I think the stock bypass valve on your car was broken. This is common. In my 7M days, I ran an aftermarket and stock valve at the same time for a little bit. I experienced no change in power after capping off the stock ports.

 

[Obsessionw/Boost]

It probably was faulty, because I've known at least 5 friends with Supra's with broken bypass valves. I don't understand why they break though. I wonder if the age just causes the internal part to deteriorate. I just thought it was a chamber inside there, with a little piece that moves up and down, opening and closing a plate whenever the gas was released; to release the boost pressure that would usually be forced back against the compressor wheel.