Jump to content

Recommended Posts

  • Member
  • Member For: 22y 3m 3d
  • Gender: Male
  • Location: byron bay more underarm hair per square km

ive had this done for a while it works on normal boost but when its increased it leaks like a sive,it happened to me when dynowog tuned my car so I just put it back to standard.

  • Donating Members
  • Member For: 21y 24d
  • Gender: Male
  • Location: Sydney
  F6_Tornado said:
The valve is fitted exactly as it should and works very simply despite many thinking it is wrong.

The side port is to the Boost side and the top port is to the intake side.

The internal piston/valve is spring applied and Boost/vacuum controlled/assisted.

So when in closed loop (idle) the intake manifold has a vacuum and as such this Vacuum acts to draw the piston/valve backwards allowing air to travel from the air filter direct to the throttle body allowing the engine to run as a N/A would.

When you open loop or apply the throttle the vacuum diminishes and becomes a positive pressure so the piston/valve in the Bov closes so no air can travel from the air filter direct to the throttle body and as such must all flow through the turbo.

As the turbo boost increases so does the boost pressure at the back of the Bov and that boost with the spring hold the Piston/valve closed to ensure no loss of boost from the Bov.  The higher the boost pressure the more force on the Valve so the chances of it leaking are minimal.

When you back off the throttle, closed loop, you will instantly have a vacuum in the inlet manifold which will pull the Bov piston/valve backwards which will intern allow excess Boost to flow back into air filter side.

Simple and very effective and having it return back into the inlet side make it a bit quieter than the aftermarket ones.

I suppose the only real advantage of the aftermarket ones is the fact that regardless of throttle position all air must travel past the turbo and at no time can the engine run an N/A situation..  Possibly advantageous with maybe less lag????

Thanks F6, I learnt more in that post alone than in any other BOV discussion I've come across.

  • 5 months later...
  • role model
  • Member
  • Member For: 19y 2m 3d
  • Gender: Male
  • Location: Melbourne,S.E

does anyone know if the FPV DRFT6 car still uses the same bosch BOV

like we have on out T's? I got a couple of pictures from the car and

from the looks of it its the same BOV we have but the trumpet on the side outlet

were I thought boost comes threw?? then why have FPV desigin it like this on the

DRFT6???

here a few pics.

DRFT6.jpg

engine-2.jpg

:roflmbo:

  • Member
  • Member For: 19y 9d
  • Location: bendigo home of SFA

that's the right side to have vented I originally thought the same thing and blocked off the wrong side.

now it makes a nice sneeze sound

wouldn't mind that plenum on the drift6 either

Edited by qwigybo

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
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
  • Create New...
'