Vent To Atmosphere Or Recirculate Which Do You Do..?

[discostig]

Stock BOV plumbing flutter FTW. Just add more boost hahaha. Not sure if B series XRs are easier to get this to happen on or not. Flutter when I want, quiet when I don't.

[JET_XR]

I haven't been using a bov but I will when I get my new turbo. I hate flutter though; what exactly is it and how do I avoid it? All I want is a short, sharp release of air and no other bullsh*t.

[matsfgxr6turbo]

just get a decent aftermarket bov with a nice strong spring that will give you a nice short sharp vent noise

[Faawks]

That flutter is the air going back and forth through your turbo.

If you have 4 psi built up between the compressor wheel and the engine, and then you just shut the throttle, all that air has nowhere to go.

A BOV would normally release it, but without on all that air needs to go somewhere so it goes back out the turbo, which is actually still spinning and bringing air in so it sucks it back up again.

Whether or not it's damaging the turbo is a massive argument that's come up again and again.

I for one don't think it damages anything, but you are putting unfamiliar load on the compressor wheel so there would be a slight increase in wear on the bearing.

As a rule of thumb I use a BOV for anything over 15psi just for peace of mind.

Sent from my XT925 using Tapatalk 2

[discostig]

I'm up to 100,000kms on current factory BF turbocharger (replaced under warranty just before I got tuned) and flutter is a very familiar load for mine! Pretty good innings so far, loves the boost