I had that problem a while ago too , I ran 2 BOV for a while and finally figure out that my bov was not opening all the way.
I am now back with 1 BOV recirculating.
You lucky guy, I can’t even hear mine when it opens up.
hmm lets see, the motor was designed to recirc, the ecu likes it when it runs re-circ. On bigger turbo’s it keeps them spooled as all the air that would have been shoved into the atmosphere is slammed back into the turbo at highspeed.
no ricer WHOOOSH noise…well thats not true, just not as loud.
You pretty much will not stall if you have a recirculated bov, it’s quieter, and I think it helps your turbo hold boost or “re-spool” faster when you shift gears since that air shoots right back into the compressor usually. (Or something like that?)
Recirculating the wastegate pretty much makes your car sound MUCH quieter… it’s really loud when you dump the wastegate into the atmosphere.
No worries man, that’s part of why the forum is here.
To summarize my thoughts and what others have added…
Recirc’ing the BOV (assuming not using a blow-through MAF set up, which is different as MAF sees boost and blow off valve releases unmetered air as opposed to metered air) advantages:
– Quieter blow off sound; this depends on your air filter, it’s location & where the air is cycled back to etc
– Better idling and driveability in general (typically)
– No stalling or less likely to cause stalling (typically) - RPM’s just seem to come down slower in my experience
– All air released by BOV is metered (by MAF), so won’t richen/backfire between shifts (like open-vent BOV’s)
Recirc’ing the wastegate’s exhaust dump advantages:
– Much, much quieter while in boost
– Safer and cleaner - carbon/exhaust fumes won’t get in your engine bay
– Cleaner emissions assuming you recirc it pre-cat, if it matters to anyone
BUT (for recirculated wastegates):
– Custom work getting it right could be a headache
– Aim it the wrong way, or put it too high up the downpipe and you’ll get boost creep! Not good!
– May require a flex pipe of it’s own
– You’ll probably lose a bit of power in boost due to added restriction
Absolum, I bet your tubing or connections are too small for the air flow of your BOV! Or it’s not opening correctly, make to use a good intake mani vacuum source, and only from there. But yeah…maybe i’ll take a look at some point…i’m sure we’ll figure it out.
