Hi guys..
A friend of mine is interested in one of theese two BOV´s because of the sound :-) The problem is that his boost level is between 1,2 and 1,8 bar. I tried to figure out some details of theese two BOV´s but i didn't succeed.
Would be great if sombody can help me out :-)
By the way.. is it possible to install 2 BOV´s. I think the greddy has a lower boost range than the HKS so can I install 2 greddy´s???

 

whats up!!! I cannot believe that nobody knows an answer!

 

bump

 

instead of trying to do 2 greddys, u can get the greddy type r which holds more boost

 

BOVs aren't limited to holding a certain level of boost.
When you have your foot on the gas, the butterfly in the IM is open and so there is a vacuum in the charge pipe. This holds the valve in the BOV shut, regardless of the boost. When you let off the gas and the butterfly slams shut, the would-be compressor surge exits out the BOV that is now being pushed open.

 

I know but it sounds not good :-( But I can use 2 greddy type S right? I´ve heard that the type S can hold up to 20 PSI of boost. could anyone confirm that?

 

mh..... and why is the greddy type r or turbo xs RFL for higher boost levels???

 

It's not so much the boos they can hold, though some have a higher valve pressure than others, it's how much boost can they bleed off quickly so you don't get compressor surge.