Switchable BOV's?

[tekdeus]

I just bought an Mk3 with 350+ RWP that has the Porsche recirculating BOV. Is it possible to install an to-atmosphere style BOV like a HKS or Greddy but have the ability to choose which BOV I want to run? Anyone ever tried installing both types but having a manual valve to shut one off and run the other? How would this affect the tuning? I just like the idea of playing with the sounds and performance of each type. Any feedback would be great, thanks.

 

[GrimJack]

Sure, just buy a vacuum switching valve, and plumb it in to send signal to one BOV or the other.

 

[diy guy]

you dont need a valve. just move the same vac line over to the other bov

 

[GrimJack]

Unless you want to be able to switch it on the fly from inside the cabin...

Actually, on second thought, I'm not too certain this would work properly. I seem to recall that many BOVs use the vacuum source to help stay closed and prevent boost leaks, so removing the source from one might make it more prone to boost leak...

 

[87supraturbo2]

Seems like alot of work and kind of expensive just to have a different sounding BOV personally.

Matt

 

[GotBoost?]

I've run the stock bov along with the greddy bov, to reduce backfiring. It worked. But i can see problems with your idea. The ecu adjusts for your setup (to a point), but the moment you switch (per your idea), the ecu gets thrown off by the change, and yer 350hp supra is going to go off tune and running rough.

 

[IJ.]

Soumds like a lot of added complexity for such a simple device, pick a BoV that works the way you want and leave it alone.....(they're NOT a fashion accessory)