Originally Posted by hornetball
Doesn't siliconeintakes.com have something that will work?
I've also always wondered why it is common practice to vent post intercooler. If you vent pre-intercooler, it should work just as well (maybe better since the pressure is higher there) and the routing can be a lot cleaner and shorter (assuming you are able to work around PS/AC).
Its put right in front of the TB to prevent the pressure wave from forming when the TB closes. Its a problem when u toss the Bov right at the intercooler since the pressure wave forms either way and it goes back to the turbo. You know the chu chu chu surge the turbo makes without a bov? Its the pressure wave bouncing back and forth through the intake between the TB and the turbo.
This is the reason why the bovs on the borgs work so lovely. They are right in front of the outlet and are directed right at the inlet where the highest vacuum area is so it pulls the pressure wave into the turbo.
When u put the bov pre intercooler on a conventional turbo you gotta use a 90 degree bend with an outlet in direct line put it close enough to the outlet but also have it directed out away from the turbo. The main problem is you're not going to have a nice straight shot at the turbo inlet so you'll be venting into atmo pressure vs the vacuum borgs have.
If you insist on putting the bov post intercooler then something like this with the top side to the turbo outlet, the bov at the small end and the right side pointing at the IC (TB) however then u're left with the bov cooking on top of the exhaust manifold.
The 2nd main problem is the velocity. You shut the door, the velocity of the entire system goes to 0. You open the throttle all the air has to speed up again to rush into the intake.
As far as the OP goes, i'd find one of the above in the picture (blue). No clue what they are called but i searched for "90 degree bov" to find the one above. Either that or have someone weld u a pipe to the current pipe u got. At last one of these on the TB inlet.