Where to mount BOV?

[mightypoof]

I am thinking the best place is in the pipe between the IC and the TB. Am I right? Thanks guys.

-Josh

P.S.- Does anyone know if the Apexi twin chamber BOV's are good?

 

[nomuffler]

from my understanding you want it as close to the TB as possible. that way less air slams into the throttle plate.

 

[tiny4lx]

as well, i was told to mount it close to the tb as possible.

 

[i4power]

from my understanding you want it as close to the TB as possible. that way less air slams into the throttle plate.

Yes, I agree as well.

 

[jman_b13]

from my understanding you want it as close to the TB as possible. that way less air slams into the throttle plate.

you got it way backwards there man, you don't want the back pressure running into the turbo, because it slows it down.

as far as best placement, that is a big debate. but I will tell you this, the majority of factory turgocharged engines that have a valve, has the valve between the turbo and the intercooler.

 

[Stinger]

P.S.- Does anyone know if the Apexi twin chamber BOV's are good?

It's great, but not for our engines. It will make it run like ****.

Stinger

 

[Lx89Stang05]

P.S.- Does anyone know if the Apexi twin chamber BOV's are good?

most use a Forge or Bailey BOV or BPV on our cars. im running a Bailey BOV DV26si

 

[notchpsi]

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[351wcoupe]

Put it closest to the TB as you can. That way when the BOV releases youll still keep the air flowing smoothly as it releases next to the TB. When you get back on throttle the BOV will close and your intercooler piping will already be filled with cooled air. If you had it closer to the turbo, when the BOV releases and you get back on throttle, youll have a tiny bit of lag as the intercooler and piping have to refil up with air. It isnt noticeable with small ICs like the TurboCoupe top mounts, but when you get to the bigger front mounts like Powerstrokes and stuff, it helps ALOT.

It is also very effective when using it a bypass valve because the air going back into the intake has already been cooled by the intercooler.

By the way, if you don't wanna worry about loosing metered air...get SDS!
Only problem is that it is close to $1000, I chose to go with this route, I love it!

This is a little off topic but has anyone else been to notchedpsi's website. That is great and I'm glad to see another person in my area.

 

[mightypoof]

Why does it make them run like **** stinger?
LOL...I already got one comming in the mail so I am stuck I guess

 

[notchpsi]

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[mightypoof]

Well I like em "TIGHT" ....lol.....

Thanks for the info, I am begining to remember this now. I think I will stick with it and see how she does.

 

[Stinger]

Because a stock Ford 2.3 turbo uses a Vane Air Meter which is mounted in front of the turbo. When you use a BOV vented to atmosphere it releases measured air out of the intake, but the computer still thinks it is getting that air into the engine. So it is adding fuel for air that isn't there. It causes a temporarily rich condition when the BOV is vented. I used a BOV vented to the atmosphere for about a year on my 88 TurboCoupe with stock computer and stuff. It did run a little rich after venting the BOV but within a month or so, it started to run like stock even with the BOV there. THe computer picks up on the air/fuel patterns and adjusts for optimum driveability. Try it, I bet you it won't run as ****ty as everyone says. True...if you use it as a bypass valve, you will be able to have a nice LOOSE spring tension on the BOV, thus allowing more air to flowout of the valve. The only real drawback to the BOV is that the spring tension has to be as tight as possible, so the car will not stall from loosing TOO much air, this means not as much pressure can be released from the BOV as opposed to being adjusted real loose.

Good info but that's not really why they run ****ty. If that were the case then ALL BOV's would make it run like ****.

The reason the BOV's that aren't a dual piston design run like **** is because they come open under part throttle conditions. This causes a huge vacuum leak at part throttle. This also lets unfiltered air into your engine (here comes the dirt).

Stinger

 

[mightypoof]

I thought that the dual piston ones are best? So it can actually signifigantly hurt my performance?

 

[Stinger]

I thought that the dual piston ones are best? So it can actually signifigantly hurt my performance?

They are...yours is a twin chamber though.

Yes, only at part throttle though...it won't effect WOT.

Stinger

 

[mightypoof]

So basically it just gets confused and has premature opening? How much does a good Bailey's BOV cost ballpark? THanks

 

[Stinger]

So basically it just gets confused and has premature opening? How much does a good Bailey's BOV cost ballpark? THanks

Well, since they rely on vacuum or boost on both sides of the diaphragm to stay closed, when there isn't much of either (part throttle) it opens up. Nothing "confused" it just acts as it's supposed to (for non-metered air systems).

Stinger

 

[notchpsi]

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[Falqon12]

I wouldn't worry too much about the BOV acting funny at cruise conditions anyways....when you drive a 2.3 turbo, the throttle is always to the floor

I kinda agree with stinger, every now and then I don't go in a straight line. you either don't drive in the rain, or are really good at avoiding tree's while oversteering.

 

[turbomx6]

bringing this one from the death

-Josh

P.S.- Does anyone know if the Apexi twin chamber BOV's are good?

I bought my Apexi BOV already with a 1G Eclipse flange from some guy in Japan. Paid it 100 bucks shipped and it's in great shape.
After I bolted it on it was a nightmare . Major stalling and back firing issues for days. Eclipse bov was not giving me that much problems for crying out loud.

Finally I'm happy to say it works better now.Idles same as before and no more stalling issues. BOV was set too soft.I tighten the screw on top just a little. About 2 more turns to be exact.
I'm not too happy about half throtle, but It can hold boost like crazy. My old 1G EClipse bov was leaking after 15 psi.
old one

new one

My exhaust still backfires ,but not as bad as before. It seems like My Bird loves when I keep it all way to floor..hehehe..jus kidding. I don't push it like crazy.. I play with my turbo...and then whooooosh past them .