Jump to content
SAU Community

Recommended Posts

Hi,

Just wondering if anyone knows a type of bov that makes the fluttering sound. Hate to describe sounds but its not the PSHH sound but more a continuous sound.

Something like Fuu...Fuu....Fuuu.... or a bit more high pitch noise and also continuous.

There are a few skylines in Syd west that sounds like that. If u own one pls tell me the type of bov ur using.

Thanks in advance

Link to comment
https://www.sau.com.au/forums/topic/5381-bov-noise/
Share on other sites

  • Replies 49
  • Created
  • Last Reply

Top Posters In This Topic

I think that's more to do with the size of the turbo than the BOV, I think it's a sign that the air is not flowing smoothly and will wear out the turbo faster than usual. Either way, I've heard a few different types of bovs do it. Mine does it, but when I heard a sample of it played on a website, it didn't have the fluttering sound. I've got a GReddy Type R bov, and a T04 turbo. It doesn't do it everytime either, if I'm revving the engine hard and do a quick change it doesn't seem to get time to make the fluttering sound.

Link to comment
https://www.sau.com.au/forums/topic/5381-bov-noise/#findComment-82134
Share on other sites

You might want to do a search on the site for more info, but basically the noise you're hearing is the sound of the turbo "chopping" the air as it bounces back off the throttle body. Usually not a good thing. If your BOV is tuned properly, it should vent the pressure rather than let it flow back through the turbo

Cheers,

Tim

Link to comment
https://www.sau.com.au/forums/topic/5381-bov-noise/#findComment-82157
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • It's excellent but I'm still breaking it in so I'm not 100% sure where it'll end up. I would say it's about 15% heavier than stock and the smoothness of the slip zone is quite progressive but you need to be a little patient compared to stock or it'll bite hard and stall. Stock I got away with absolutely horrid clutch control. Like I said before I couldn't even tell where the clutch would grab when it was stock so releasing way too quickly without enough revs it would just slip and the revs would drop lower than ideal but that would be the end of it. Currently there's a bit of a nasty clutch judder if I don't apply enough revs + find the exact wrong point of the slip point in the clutch pedal but it feels like it's slowly resolving as I drive it more. I would not recommend the competition clutch unless you really need the extra clamp force. I think this clutch combined with the Nismo operating cylinder is going to be exactly what I want. Enough bite that you need to remember the release point to avoid stalling or rough shifts, but progressive enough that it's not hard to drive by any means and not heavy at all. I tried a "super single" clutch on my friend's 997.2 Turbo 6MT and that was absolutely horrid. It runs an electrohydraulic power steering pump for the clutch power boost so there's zero feedback in the clutch pedal and there was a horrific clutch shudder well after break-in due to the lack of marcel springs or hub springs in the friction disk. It felt like the slip zone was the thickness of a single toe twitch as well so it was almost impossible to avoid stalling it unless you gave it a ton of revs and just dumped the clutch instead of trying to be smooth with it. I was terrified of pulling out in front of traffic. I have also tried some kind of "super single" on an EK9 and that makes this twin plate Coppermix look like a stock clutch. Releasing the clutch pedal even slightly too quickly feels like you're getting rear-ended. The pedal is extremely heavy as well and there's no vacuum assist like the GTR.
    • Yeah, well I was probably way underguessing the $300 figure anyway. Just multiplied a "normal" by 4 for the purposes of pointing out it's not cheap, particularly if it has to be repeated.
    • We have an alignment shop out here that does what you're talking about but he wants like 800 AUD a pop. DIY is "cheaper" but once you start accounting for the value of your time I'm not sure it's worth it.
    • The main catch phrase for any car is "the eye of the beholder", and "personal tastes and preferences" And as for the plastic "flares", I honestly think they look cheap and tacky, and I cannot see them aging well, maybe if they were body colour they might look better to my eyes, but, I would still prefer it the were more like the older WRX STI models that had the wider body metal panels In saying all this 5hit, I wouldn't buy a new WRX again, even if it had the wide body metal panels    
×
×
  • Create New...