High Boost Blow Off Valves

[geraus]

80ech, ive sold some for 80each

[Guilt-Toy]

i paid $200 for mine off a mate, and he gave it to me for the price he got it for (cheap second hand price)

how much would they go for second hand?

[bubba]

I paid $250 but they came with the full GTR cooler piping setup (minus the turbo intake pipes).

[H00N]

hey mate.. my BOV stays closed... It does not release the pressure... It oly opens up sometyms... even if i rev it does not open most of the tym... what an be the problem or is smethin wrong with the BOV...??? y does that happen ???

[KiwiRS4T]

While we are on the subject of BOV's I'd like to ask about location of them.

I was under the impression the best place was as close to the throttle body as possible. That way, when the throttle closes and the BOV opens the majority of the charge air continues flowing in the same direction.

The other day I was looking on the turbobygarrett website and it stated the best place for the BOV was as close to the compressor outlet as practical. To me this doesn't make sense as all the charge air in the pipes/intercooler has to reverse flow to exit the BOV.

It does make sense. The purpose of the bov is to relieve the pressure on the turbo not the throttle body so the closer to the turbo the better. When you close the throttle the turbo is still spinning and pumping air so opening a valve near the turbo is going to give the quickest relief.