Installing bov, recirculating or not be

[Bruizer]

I'm installing an hks bov and I have the option of staying recirculating or atmospheric. It doesn't say how to change it to atmospheric and all it says about recirc is to install the recirc parts, which don't come in the new kit. My question is, if I have a stock setup and want to install this as atmospheric, do I need to do much else? In the installation guide, it says to leave the OEM bovs and just cap off the 6mm hose feeding the valves and use it on the new bov, but it doesn't say anything else about using this as an atmospheric bov. Do I just install it as it says cause I don't need to worry about the recirc piping that isn't touched or do I HAVE to buy more parts and make this recirc unless I change the ducting. I'm sure this is as dumb as, use it or don't but I want to make sure. I'll be done hooking all this up in 5 mins anyways and start it up. Just curious if anyone else has gone to atmospheric and still kept all the recirc piping temporarily. If it's needed to know, this is an HKS ssqv bov II and the english manual is pretty basic. Thanks Guys.

[Fuzen]

When i threw on my greddy type rs bov, we left the recirc pipes in there and I just blocked it off until I had time to take it out properly.

[Bruizer]

So where did you block it off. What is necessary? Doesn't the recirc only open when the OEM bovs actuate (open) What I'm saying is, if I leave it all like that, what could there be wrong? I can't see why I'd need to block it, aren't BOVs normally closed? So if there's no control air going to the valve, it doesn't open?

[Fuzen]

im at work so I will try to explain lol. I was doing this on my GTS so you know.

The stock bov sits on the intake pipe, and 2 hoses come out of it. One is the vacuum hose which tells when the bov needs to open, and the second is the pipe that leads back to the intake before the turbo. When I put on the Greddy BOV i took off the actual stock bov and put the greddy one there, I then ran the vacuum hose to the greddy bov. I blocked the second recirc hose right where it attached to the bov originally, with a sort of metal plug thing and 2 clamps.

You dont really have to block the second hose which goes back to the intake before the turbo, but i figured its just an open pipe so it might act like a weird leak and would have intake issues. So just for peace of mind I blocked it, then when i put in my hardpipe intake i took it out.

[Bruizer]

Ok, I understand what your saying. Things are different on the gtr I guess. The OEM bovs are right after the cold side of the intercooler behind the bumper, underneath the battery, so when someone installs this bov for example, you just replace the flexible pipe that goes from the bov pipe to the intake plenum. I think I'll go ahead and say it's safe to start and try it out. I can't see how having the recirc or not will harm this car, I just figured there was more to it when it came to changing to atmospheric. If anyone else has some info on a GTR bov of the same type please let me know what you think. Thanks for the feedback Fuzen

[Bruizer]

The BOV worked alright. I didn't install the purple insert so I could hear the basic soundtrack... I should have installed it lol. anyways, the SSQV bov II was not what I expected as of yet, but I only got to try it for a quick trip to the store. Sounds alright, but I think the purple insert is where the secret lies! Stay tuned!

[Bruizer]

Just returned from a ride. I must say that I cannot see why someone would want atmospheric over recirculating. I will not be going to MAPs but rather MAFs so I want to keep my setup recirculating. If I keep a bit of throttle on, it keeps dumping and the car starts to stutter and miss a little, naturally. So, does anyone know how to get the hks ssqv to recirculate? Which parts do I need? can I still use my purple insert with the recirculating insert? Am I crazy and wasting my time of a recirc bov...

[Connor]

After reading that I'm still not sure if you blocked off the recirc piping or not. You should have, naturally, since you'd have unfiltered, unmetered air being sucked into the engine. Sounds like the preload setting might be too low as well, causing the valve to pass. Turbosmart has an excellent guide for setting up a new BOV. It was written in english the first time, so you won't have to decipher a translation. HKS does make a recirculation kit for those BOVs, you should be able to get them from your parts supplier.

[Bruizer]

I could be wrong but I think I'm ok. I did not removed the recirc vavles and they are not taking air in. If the vacuum line actuating the valve is disconnected and plugged (like it is now), the valve is NOT open and will not therefore the air won't pass through and recirc. This hks kit is a bolt on, it just takes it's control air from the OEM ones. So it's one of the other. So I'm not understanding where this unmetered and unfiltered air is coming in. I know where it's going OUT to atmosphere though. What I'm saying is that ALL my piping is still there, except the BOV vacuum line has been moved from the oem to the HKS one. I think this will clear things up.

After reading that I'm still not sure if you blocked off the recirc piping or not. You should have, naturally, since you'd have unfiltered, unmetered air being sucked into the engine. Sounds like the preload setting might be too low as well, causing the valve to pass. Turbosmart has an excellent guide for setting up a new BOV. It was written in english the first time, so you won't have to decipher a translation. HKS does make a recirculation kit for those BOVs, you should be able to get them from your parts supplier.

[falcon]

all you need to do is have the large tube that runs back to the intake, attached to the BOV on the large exit hole. And make sure the vaccum is hooked up.... thats it.

All atmospheric means is that the air being discharged by the BOV exits into the air, rather than into a pipe that leads back to the intake. Not really that complicated. As long as you have the pipe that leads back to the intake blocked off, you shouldn`t really have any problems. It basically sounds cooler, that about it.

If the pipe is blocked off and you are having problems, you`re doing something else wrong. Make sure to have the spring compressed to the proper level. The BOV dosen`t work straight out of the box, you need to do some adjustments to it for it to be set to you`re specific boost levels. If the spring is set too soft, then the BOV will leak out air before you want it too.