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Not sure you will notice much on the recirc but I am interested
How To: BOV on natural vacuum
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I did mine a few months ago. No issues with the Mountune BPV and the car is quieter as expected. I'm hearing much less of the blow off type sound, but more of that faint whine the turbo makes.
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New to the idea of BOV's, but how does this help? I've heard from car groups that it makes the BOV go off less. Is that true? I recently ordered a 50/50 TS BOV, as much as I would like the sound of the BOV, I'm sure it gets annoying after a while. I also prefer the sound of an open(no box) intake over a BOV. Would I be able to hear them both? I don't intend on going bigger turbo or tune anytime soon. Also plan on keeping my warranty so I'll probably be taking it off every time I go for a service( I know that sounds dumb, but I'd rather play it safe). I appreciate if anyone reads my dumb questions and responds. Have a great night!
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yeah the natural vac "makes" it go off less or more accurately makes it go off more accurately and not just when a solenoid and a vac pump tells it to go off, like every time you barely give it gas and let off. It now will only go off when vacuum from your intake manifold triggers it to "blow off".
Turbosmart recommends moving the BOV to natural vac, tho few do it, I think more have been changing to it. I know I have moved nearly everyone in our local club to this setup
the "mod" is super easy and if you needed to change it back before a service it is literally pulling the extra vac line and plugging it back into the old location.
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Hey Unfocused thanks for all your input, its helped me alot. I'll be ordering a BOV this weekend and doing this install soon. I'm new to this though, are you saying that turbosmart is designed to run off factory vacuum? Basically, I'm asking for recommendations for going with turbosmart or TiAL on this set up. Thank you
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I run the turbosmart hooked up to the symposer delete. I've had no issues other than it goes off a lot less. And when you're on it and it does go off has more authority and is louder. Just set your spring tension to the lowest setting before you install. Which is so the cap just covers the 2nd o ring to prevent leaks.
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It is. However it's one of the few factory location BOVs that are adjustable. So it would be a more ideal candidate for this. Now it you go TiAL it will require you to purchase a kit that relocates it. So it is more costly. However TiAL is one of the highest rated valves on the market. Which is why I went with mine.
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I'm planning on this same setup.
I don't think I'm quite understanding you about the cap covering the 2nd o-ring though.
I'm seeing two brown o-rings on the inside side. A larger diameter one on the part the bolts go through to connect (flange?), and a smller diameter one that is at the very inside, or bottom if just standing the BOV on a desk (as mine is now).
As I loosen it by turning the cap, I'm seeing the oval shaped cutouts on the outside (top) side getting larger and the one on the inside getting smaller.
And when pushing on the spring from the inside I'm seeing another o-ring right between the brass and the steel.
I'm just having trouble visualizing this.
Do I want to completely or nearly completely cover the inside cutout with the flange/cap?
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If you unscrew the cap which adjusts the spring tension. There are two o-rings that seal the cap to the body one above the other. The cap has to at least be on far enough to cover the second own ring so there is a double seal and it doesn't leak. That is where I'm running mine.
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I ordered the parts off amazon, but just to clarify, doing this well make my BOV less annoying? Going off every ten seconds is a bit much IMO...
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Yes you should easily be able to drive it around town without it going off if you wanted. You will actually need a few pounds difference in pressure for it to blow off. Rather than a computer telling a solenoid to go off.
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yeah it should be more common knowledge that if you get a BOV you need to connect it to natural vacuum. I think this thread has helped spread that a little more. @G heinrich nailed the key point. the natural vacuum isn't controlled by a computer and solenoid, it just runs the BOV off vacuum from the intake manifold which won't make it go off unnecessarily
So glad I found this!!! I just got a 2018 ST3 and installed the turbosmart 50/50 and I knew something was wrong when even on the hardest setting it will blow off ALL THE TIME. I ordered the cap and tubing from amazon and the accelatec symposer delete with gauge port from CJ's. Cant wait to install it this week so it works properly.
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I also run the turbosmart 50/50. I'd recommend backing off the cap to the lowest spring setting. So the cap just covers the second o-ring. Even set at the lowest setting I still get a little bit of flutter at low throttle.
Yep! I'm in Forest Grove. I see you are in Scapoose, not too far from me, just over Cornelius Pass.
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I'm gonna leave it on the hardest setting and see what happens. I really only wanna hear it when there is a significant amount of boost.
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That's up to you but you don't want access a flutter either.he really not setting it to go off at a higher boost level you're just sending it to go off for the higher difference between manifold and charge pipe pressure. if you're running 3 lb of boost and then you let off the throttle and it dropped to 12 lb of vacuum it's still going to go off. Was it hooks to the symposer delete I can easily drive without it blowing off if I want to.
Good to know. Thanks!
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That kind of flutter will not hurt anything and is ok. ask me how i know. I have 90k on my car with a TIAL and a massive intake and filter. I get LOADs of flutter, again that flutter doesn't hurt a thing
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