Hey there. Just like the tittle says. Yesterday I decided to "upgrade" to a non recirculatory BOV.so I plugged the hole where the oem bov discharges in to the intake and cranked the car before I installed the aftermarket BOV just to make sure everything would go smoothly. To my surprise the car wouldn't to hold the idle, but as soon as I reconnect the oem BOV in to the intake the car would idle no problem.

So what should I do? Orwhat am I doing wrong?

To test that the plug wasn't leaking I filled the intake hose with water and waited to see if there was any type of likage (I know this is not %100 accurate but is the best I could think off)

Also my car idles no problem in other circumstances.

 

Sounds like you are creating a vacuum leak.

 

Install the after market BOV and it should work.

 

So you unplugged the BOV/bypass valve from the turbo inlet duct (TID), and plugged the hole in the TID? If so, you created a big vacuum leak via the bypass valve. With vacuum applied, the valve is open. According to the FSM, it takes ~12 inHg to open it.

You'll have to plug the hole in the TID & disconnect/plug the vacuum line going to the bypass valve to do your test. Or just hook up the aftermarket BOV and be done with it. Note that the engine will run rich between shifts if you no longer recirculate the air. You'll be more likely to pop some fireballs out the exhaust.

 

Thanks for the help. I think I did create a vacuum leak. So what I did was I left the oem BOV connected to the TID and just connected the BOV to the hose where the OEM BOV used to be and problem solved.

Also my car already does the fireball thing since it doesnt have an oxygen sensor (not by choice I bought it like that) and I have no idea how to reconnect it.

 

^ I would recommend it as you will notice a decent fuel mileage increase with it connected.