BOV questions

[Eeeeky]

Hey guys. I have an SSQ bov on my 2g gsx. I dont like the "choo choo choo choo" noise it makes, i wanted more of a single air rush. I know these BOV's are popular, and it works great, and doesnt leak from what i can tell, but i want to have one nice big PSSHHH! Hehe, what BOV might i pick up/trade for to get this? I have researched a little, but couldnt find any solid info.

Thanks

Aeryk

 

[EagleTSIawd]

I had the HKS SSQV vented out and it was fun for a while. I recirculated it and it flutlered bad but when vented out it worked great and made a clean laud sound so I am thinking yours should too. Do you have anything tapped into the vacc line of the BOV?

I got the Synapse BOV because recirculated and stock quiet is what I wanted now and also because I could keep the same HKS flange style and not worry about welding a different one.

I noticed a great difference with this new BOV, not only did it make a clean (and not so laud) woosh sound under vacc or boost but I also felt a much better idle and throttle responce under vacc. This is probably because it stays open a little with vacc so now some of the air doesn't have to take the long route throught the turbo, intercooler and pipes.

If you want to keep it vented out though, you will need a filter on it or an adapter they sell to keep it closed... Or avoid all that and recirculate it.

 

[DSM_Talon77]

Go with the NGR Type-S BOV

Its a GReddy Type-S for the "swoooosh" sound only with a better diaphragm.


All the info here:

YouTube - ngrperformance's Channel

Their website isnt finished yet.

I am getting this for my TSi when I get maintenance done on it

 

[Eeeeky]

Dont get me wrong, this BOV works flawlessly. real loud, and no leaks. But its not the sound i want is all.

 

[Boomdeeze]

Which BOV comes with this kit?

Talon/Eclipse 2g short route fmic kit

It looks like the NGR Type-s but I'm not sure it doesn't say what it is in the description.

 

[xhackerekx]

i like the "choo choo choo choo" noise just i have this on boost like up to 15 over this makes one pshhh loud like crazy on recylcution.

 

[Code504]

I like my tial BOV....

"Pinky" Steve's DSM at STM - Car Videos on StreetFire

 

[xhackerekx]

soun my bov.
http://www.youtube.com/watch?v=tkUrN_s-oHA

 

[fran_drivertsi]

Really Fcuking Leaky.

Those pieces of trash are mounted to their base with three set screws () and are sprung lighter than any valve on the market to make 5psi sound like 30psi when they open.


O.P. - A 1G BOV (or Evo 9 BOV, depending on the base flange you need) is exactly what you're looking for. You can't beat the price or the performance.

I happen to think otherwise. I've learned this from a friend of mine. The BOV itself has all machined parts with o-rings. If an o-ring ever fails (cracks or tears) I can just get a new one. It is basically rebuildable.

The O-ring and those 3 screws hold 30psi perfectly fine. Do you really think that if that design was prone to failure, Turbo XS would still continue manufacturing it?

Most BOV's are not rebuildable, the manufacturers usually do not offer parts. But the TurboXS valves are a simple and effective design so I can use or make parts for them if they ever fail. It's also adjustable, so I can adjust how it opens. There are washers inside that keeps the BOV closed at idle and increase the spring tension for it to hold more boost.

I think it is a great product, the only one I can think of that is possibly better is Synapse one.

 

[frankenstein406]

What do you think would be better to use? I have 1g bov or i think a greddy knock off? Its purple and chrome no markings on it.

 

[JusMX141]

I happen to think otherwise. I've learned this from a friend of mine. The BOV itself has all machined parts with o-rings. If an o-ring ever fails (cracks or tears) I can just get a new one. It is basically rebuildable.

UNlike Greddy, TiAL, and most other aftermarket valves?

The O-ring and those 3 screws hold 30psi perfectly fine. Do you really think that if that design was prone to failure, Turbo XS would still continue manufacturing it?

They'll build it as long as the Honda guys are buying it.

Most factory BOV's are not rebuildable, the manufacturers usually do not offer parts because they rarely, if ever, fail.

Fixed.

It's also adjustable, so I can adjust how it opens.

Again, UNlike Greddy, TiAL, and most other aftermarket valves?

There are washers inside that keeps the BOV closed at idle and increase the spring tension for it to hold more boost.

Why would you want to do that when the basic function of the BOV is to be open at idle so any air in the piping is recirculated once the throttle valve is shut?

 

[1twistdtalon]

If you have all the things on your car to be able to vent to the atmospher is it still better to recirculate or does it not matter??

 

[2gGSX]

It does not matter, other than for environmental reasons.

 

[rEclipserGST]

sound my bov.

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You sure that is not compressor surge? Sounds sexy... but I've heard that sound before . And compressor surge is definitely NOT sexy .

 

[1twistdtalon]

It does not matter, other than for environmental reasons.

I was thinking it would not have any performance gain/loss provided you where set up to do it with a blow threw mas ect..

 

[xhackerekx]

my lifters clicking allways when temperature below 30 ,when i instal FMIC with this BOV start sound like this car pull like creazy acidental i set boost to 30psi and hold.blow 1st tranny on 5th gear.

 

[JusMX141]

my lifters clicking allways when temperature below 30 ,when i instal FMIC with this BOV start sound like this car pull like creazy acidental i set boost to 30psi and hold.blow 1st tranny on 5th gear.

We're not talking about your lifters ticking.

That blow of valve is WAY too tight if you're doing much street driving. Don't tap your Manual Boost Controller into your BOV line, either. The bleeder-type MBC's basically add a vacuum leak to the line and can effect how the BOV opens.

 

[xhackerekx]

We're not talking about your lifters ticking.

That blow of valve is WAY too tight if you're doing much street driving. Don't tap your Manual Boost Controller into your BOV line, either. The bleeder-type MBC's basically add a vacuum leak to the line and can effect how the BOV opens.

i have different BC electronic now and conect separate same sound

 

[GooeyGus]

i have different BC electronic now and conect separate same sound

does it sound like that when you let off the throttle at full boost? If so, you need to loosen the spring pressure. It should just be one "whoosh" not sputtering like it's doing.

 

[JEFFREYCASTGSX]

You sure that is not compressor surge? Sounds sexy... but I've heard that sound before . And compressor surge is definitely NOT sexy .

Thats bov flutter, causes no harm to turbos. Real compressor surge causes harm to turbos, it happens when you cross the surge line and happens when your compressor is too big for your turbine(and exhaust housing), basically when to much air goes into the engine and not all can come out.

 

[rEclipserGST]

Thats bov flutter, causes no harm to turbos. Real compressor surge causes harm to turbos, it happens when you cross the surge line and happens when your compressor is too big for your turbine(and exhaust housing), basically when to much air goes into the engine and not all can come out.

So I guess I was thinking the BOV was emitting "fake" compressor surge

How would too much air going into the engine NOT come out of the engine?

 

[JEFFREYCASTGSX]

So I guess I was thinking the BOV was emitting "fake" compressor surge

How would too much air going into the engine NOT come out of the engine?

Too much air for the engine, in other words more boost than the turbo can take at that RPM.

 

[rEclipserGST]

Too much air for the engine, in other words more boost than the turbo can take at that RPM.

Maybe the drinks are getting to me and hindering my thinking process. But that statement does not make sense. Either because it is incomplete or just false.

Simple answer would be CAN a T25 cause compressor surge? If not, what turbo can push "more boost" than the turbo can take at (whatever) RPM? Either way, PLEASE explain in detail.

 

[JEFFREYCASTGSX]

What does too small of a exhaust turbine/housing cause in a turbo? Faster spool and MORE BACKPRESSURE. If you have too small of a exhaust housing/turbine(in comparison to the compressor size) then you have high chance of surge. So if your flowing too much air, but the engine is not moving fast enough(low VE) then you can cause surge, or in other words unstable airflow that is not going in. This is when the pressure from the exhaust is HIGH, and if you add to that the pressure that is being put on the compressor, then you have extreme stress being put on the turbine, the shaft, bearings and compressors. Have you ever read a compressor map? Look at the lower part, and you will see the surge line, above this is where you dont want to be, thats the part where typical surge happens. If you look at compressor map for a Holset, you will see that they operate very close to that line, BUT if you read through the threads there isnt any occurence of it, thats because (in my opinion) they use a large compressor cover to combat surge, and maybe there exhaust side flow very well.

 

[xhackerekx]

does it sound like that when you let off the throttle at full boost? If so, you need to loosen the spring pressure. It should just be one "whoosh" not sputtering like it's doing.

no on high boost over 12psi i have very loud sound "whoosh" and my dsm scary people on sidewalk

 

[NathanWeidman]

i have a greddy bov and it has a purple top on it, there are a couple of hoses not on it and i was wondering if anyone had a diagram or any thing so that i could see what i was missing?