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sevened
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sevened Enthusiast

sevened

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Personally, I'm not so keen on them. I don't hate them; they're like a noisy catback on a wrx at the lights, it just doesn't bother me. Personally, I wouldn't go out of my way to get one. However on my last service, I did mention about this sudden and very abrupt loss of boost during gear changes (rb25det AUTO). I was advised to put in a BOV "so it can release pressure better" whatever that means. Is this true?

If so, what brands or models would anyone recommend? I would very much prefer something subtle, much like the stock bov in a JZA Supra. Been in my mate's ride and it has a very subtle whoosh sound, nothing like the SSQV. Personally I've had friends recommend the Blitz Super Sound. Not too savvy on this so some help/advice would be appreciated. >_<

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RB25PWR Proficient

RB25PWR

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If your car is standard it'll already have a bov. You probably can't hear it because I assume you have the standard airbox/snorkel and it's plumbed back. I just have a pod with the standard bov/plumbed back, that sound is enough for me.

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3LGODZILA Proficient

3LGODZILA

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well lucky enough ur car has a bov - and being an auto im guessing its fairly standard? if so then it will 'release the pressure' just fine. if ur making a fair bit of power and on the standard bov's limits then u can buy a gtr bov which is worth around $50 and can handle ALOT of power.

i think he was just trying to sell you one

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sevened Enthusiast

sevened

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See thing is, when I floor it, boost kicks in around 2.8-3k rpm. Boost carries through through the rev range, until the auto box shifts up. When this happens, it feels as if I abruptly stopped the throttle. And perhaps to a certain extend, its feel like(not saying it is), a huge sudden engine brake. After this huge loss of boost and gear change, it starts to pick up again.

It's anything but smooth and annoying as hell sometimes. I spoke to the guys at the garage, they weren't trying to sell me anything in particular, but said that Nissan's auto boxes from the last century are shit and laggy, hence the weird gear changes. He advised me that probably swapping over to at atmo bov might solve the problem.

I'm not looking for the biggest whooosh sound that will make me feel like i have the biggest weiner in QLD, word. I did look up a fair amount of threads but most of them were looking to get turbo flutters and compressor surges and hugeass whooooshes.

I'm just simply looking for something with a subtle, sound, easy on the ears, and not annoying(if installing a BOV would help). >_<

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defari Grand Master

defari

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i have a blitz one (from previous owner/s) cbf taking it out or replacing it.. if i change before 4000rpm it makes a bit of noise - anything over that, its like a gun shot followed by a flutter.. imo much of a muchness, i would never buy a bov unless it was necessary for more power..

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Nee-san Grand Master

Nee-san

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i still dont think a bov will help but if ur dead keen on it then get a cheap one, usually the louder ones are the more expensive

Get one that doesn't make any noise at all.

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mad082 Grand Master

mad082

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as above, the issue you are having has nothing to do with the bov, because the bov shouldn't really be opening much on the gear change in an auto unless you are one of those people who lift off as it changes gears to try and make it sound like you have a manual. the problem you have is with the gearbox. i'd start with a service on it and then a shift kit if you want.

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Granthem Mentor

Granthem

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HKS SSQV. With the Purple fin replacement to change the pitch.

Mostly around town I just get a nice little flutter. Very easy to get a flutter tho with the HKS design.

When under it, well I dont even really notice it anymore. There is enough noise going on with the GT-RS spool, screamer and RB25 to hear the bov going off

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