bov flutter

[1badturbo]

I'm looking for a bov that has a deep tone and flutters like these, can anyone make any recomendations.



http://videos.streetfire.net/search/flutter/0/f779e8c7-ec8d-4069-aca7-8c8a7e9c4aaa.htm

http://videos.streetfire.net/search/bov/3/03bbc825-17d7-41b4-9dee-9826011289ea.htm

http://videos.streetfire.net/search/bov/10/56315413-d7a3-45af-be41-eadb5e3916b8.htm

 

[T9S1i]

i just threw my hks sqv back on my car after i rebuilt my motor and it flutters. It used to just sound like a loud sneeze like a better version of the 1g but ever since i threw it back on last week it has been fluttering, i dont know if its supposed to though... but my boost gauge does show it dropping pressure.

 

[1badturbo]

It sounds like its not closing if its loosing pressure.

 

[T9S1i]

no i was worrying that it wasnt opening enough, but its only opens when its supposed to

 

[definitiveno]

Why in the world would you want that? I would think one would want a proper working bov that simply released pressure as fast as possible. Every time that bov flutters it is closing then reopening delaying the time it takes to relieve the pressure within your intake system.

 

[1badturbo]

I like the way that sounds, thats why I want it. I here that on high hp cars all the time.

 

[madscientist91]

Correct me if im wrong.. but isnt that fluttering sound caused by air not going through the blow off vavle and exiting out the turbo in reverse causing the wheel to spin back an forth? Because thats the sound rally cars make when they let off the throttle and they arent aloud to use bov's. Thought i read that somewere.. dont knows.

 

[1badturbo]

Compressor surge and bov flutter are to completely different things .

 

[JrCRXHF]

Correct me if im wrong.. but isnt that fluttering sound caused by air not going through the blow off vavle and exiting out the turbo in reverse causing the wheel to spin back an forth? Because thats the sound rally cars make when they let off the throttle and they arent aloud to use bov's. Thought i read that somewere.. dont knows.

Rally cars have BOV

i tech them

as far as the sound the HKS will let just enough air out at low boost pressure but at high boost it will give more of a dump of air and you get a chirp I have two of these SSQ one on my honda 8psi boost and one on my DSM 17psi boost they both sound different because of the pressure.

 

[daren_p]

If you want a valve that flutters under full boost, its simple. If the valve is adjustable such as the Greddy, adjust it abit too tight, or put in a heavier spring etc. While its easy to do its not recommended. BOV are designed to release all that compressed air that has no ware to go. You want it to realease in one burst not several smaller ones. Is it worth possible damagining the turbo in the long run, just because you like the sound?

Edit: Should mention some valve such as the HKS SSQV will flutter like that under low boost conditions but should release in one burst at high boost, which is okay.

 

[1badturbo]

Ok so fluttering is bad sometimes but what gives them that deep sound I had a rfl bov but it sounded like a bus air brake and I didn't like that. The deep sound I'm refering to are in first and third videos that I posted.

 

[T9S1i]

i am only running 10 psi right now, still breaking in my motor... thats probably why my bov is fluttering. When i crank it up to 15 ill let you know if my usual sound is back. I remember now that it used to flutter all the time when i would only boost a few psi.

 

[spectr019]

yeah the hks ssqv will give a flutter.

BIG SUGGESTION: Unless you have updated your vehicle profile, you are apparently using an AFC for the fuel, and not a maft setup or something similar. I would recommend worrying more about keeping the car safe rather than the sound kids on the block will hear. You may not feel it now, but venting the bov pressured air after its has been calculated will have bad effects later on.

But again, choice is yours. Back to your actual question, the ssqv will flutter, and the tone will depend on what piece you have on the inside. I forgot what they call it specifically, but it's the colored piece just on the inside, which will either be purple or orange (I think).

Ben

 

[Rice Over Wheat]

I like the way that sounds, thats why I want it. I here that on high hp cars all the time.

So you want to sound like a high hp car instead of being one?

 

[T9S1i]

yeah the hks ssqv will give a flutter.

But again, choice is yours. Back to your actual question, the ssqv will flutter, and the tone will depend on what piece you have on the inside. I forgot what they call it specifically, but it's the colored piece just on the inside, which will either be purple or orange (I think).

Ben

If a ssqv is set up properly (re-routed) then you have to pull out the little "merceded benz sign" to install the recirculation fitting. So you really have no choice for the little sound making piece. Thats why people who vent their ssqv have that high pitched chirp rather than the recirculated bov's that only sound like a higher pitched 1g bov.

 

[Boosted98gsx]

That's comp surge, not a blow off valve venting.

 

[1badturbo]

So you want to sound like a high hp car instead of being one?

More or less if I can't be fast I might as well make it sound fast. j/k

I have some plans that include a new transmission, new front mount, new turbo , ...ect so exactly what is the benefit of a maf setup. The only answers I ever get to that question is you don't have to recirculate the bov and it sounds cool. If that is the only benefit of a maf setup whats the point.

 

[wazzelby]

so exactly what is the benefit of a maf setup. The only answers I ever get to that question is you don't have to recirculate the bov and it sounds cool. If that is the only benefit of a maf setup whats the point.

At your level of mods the only thing it will do for you is allow you vent to the atmosphere (and be a tuning nightmare).
If/when you get to the level where you are overrunning your 2G maf, the 3" and 3.5" GM maf can give you the ability read higher airflow numbers. Of course if you are using DSM Link you can stick with the 2G maf and just use the Fake Maf option.
All in all I really don't think the GM Maf is much of an "upgrade" and most of the time it is more trouble to tune than it's worth.

 

[1badturbo]

Well my goal is to have close to 400whp on pump at no more than 22lbs. of boost would I need a gm maf for that.

 

[daren_p]

Well my goal is to have close to 400whp on pump at no more than 22lbs. of boost would I need a gm maf for that.

With DSMLink, nope If your using another tunning you may be getting close to the limit of overrun (not flow) for the stock 2g MAS but I believe you still should be able to pull it off without a problem. You can always hack the MAS as well to give you abit extra room.

Edit: 400 whp on no more then 22 psi, do you have a turbo in mind as its going to be fairly large or you need alot of the mods that effect VE to achieve that goal with a limited amount of boost. Also being your fwd the 400 whp on a 2g MAS shouldn't be an issue.

 

[1badturbo]

With DSMLink, nope If your using another tunning you may be getting close to the limit of overrun (not flow) for the stock 2g MAS but I believe you still should be able to pull it off without a problem. You can always hack the MAS as well to give you abit extra room.

Edit: 400 whp on no more then 22 psi, do you have a turbo in mind as its going to be fairly large or you need alot of the mods that effect VE to achieve that goal with a limited amount of boost. Also being your fwd the 400 whp on a 2g MAS shouldn't be an issue.

Well I gave several in mind all but I think I'm going to go with a 60-1.

 

[Burnett03]

I like the way that sounds, thats why I want it. I here that on high hp cars all the time.

if you like the way it sounds then get used to hearing your turbo get demolished from surge.

 

[wvturbo2]

Just block off the bov completely and everytime you let off you will have the sound you desire. Enjoy the sound you might make it to the next f&f movie

 

[joe]

Just block off the bov completely and everytime you let off you will have the sound you desire. Enjoy the sound you might make it to the next f&f movie

I hate the sound of compressor surge

 

[1badturbo]

Ok I know what compressure surge is I'm not stupid so stop making me look like a ricer that owns an honda, and for the record I hated the f&f series. What I'm lookig for is a bov that flutters under low boost and a full woosh at higher boost levels that has already been explained so it appears the hks bov would be my next bov.