BOV Vacuum
I just rememered that when I was swapping my IM, two lines were not connected. If you look at middle of the IM the are 2 ports pretty close to each other. On my IM there is no hose on them.
I would strongly suggest that you put a cap on the open ports of your intake manifold or make sure you aren't missing a hose. If this is indeed the case it's pretty much a no brainer to see why you have a vacuum leak.
A vacuum leak won't make your valve leak it our valves are designed in such a way that it will ALWAYS BE OPEN when your car is at idle. You NEED to reconnect the discharge port on the valve to the turbo inlet pipe after the MAF or find a check valve large enough to put on the discharge outlet.
The only way that you will get those valves to seal at idle is to connect the hose to a pressure source, and if you do that the valve will never open.
You have three options:
1. Recirc the valve.
2. Check valve on the discharge.
3. Buy an actual atmospheric valve.
The only way that you will get those valves to seal at idle is to connect the hose to a pressure source, and if you do that the valve will never open.
You have three options:
1. Recirc the valve.
2. Check valve on the discharge.
3. Buy an actual atmospheric valve.


