Sounds like the diaphragm inside the bov might have a hole in it.

Mine did the same thing. I got rid of it and got a Greddy Type-S, no issues since.

I HATE this bov! No matter where I have it set I get boost dump or comp surge. JUNK im my eyes.

try the ngr bov

97gst yours leaked out of the back of the bov also?

Same thing happened to me when I BLT mine. Looking for a Tial to replace this pos.

Orangedsm95 said:

97gst yours leaked out of the back of the bov also?

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Yep.

I guess that greddy bov's all suck i had a type s before this and it was p.o.s also.

Same problem with my valve.. considering a change just dont knwo too what yet.. any suggestions anybody?

I had the Greddy type-s with the same problem, switched to the Tial and it's awesome.

Ive got they type s, had no problems so far. Had it for about 9 months and it was my buddys before I bought it.

T man DSM said:

I had the Greddy type-s with the same problem, switched to the Tial and it's awesome.

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I am considering switching to TiAL what model do you run? Can you post a picture of your setup?

I have a type s and have had no problems at all. I dont know how you are setting it but i used a vacuum pump, I pumped it to 20" And set it there. I had a problem where it was leaking out of the adjuster srew but i put a small o ring under the washer and it has not leaked since. I bought it used and assumed it was missing the o ring. Take it apart and look at the diapraghm, Just keep pressure on it while you remove the allen screws so it doesnt pop apart on you, The spring tension is pretty strong.

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Check out this link too, Might lead you in the right direction. I have also heard of people buying the knock off's on ebay and using the diapraghm, I have a cheapo one that came with my intercooler kit that i disassembled, The diapraghm is pretty strong, Maybe even stronger than my greddy.http://www.stealth316.com/2-greddy-bov-anatomy.htm

Trash it and get the type s

Does anyone think the diaphram would cause it to leak right there?

I now cant hold past 12 psi. And it runs bad under boost now. Have to tighten the bolt al the way down now.....

http://www.dsmtuners.com/forums/newbie-forum/298194-boost-leak-test-leak-out-bov-recirc-tube.html
http://www.d-series.org/forums/diy-...ld-your-ebay-greddy-type-s-rs-bov-3-19-a.html
http://www.extremepsi.com/store/customer/product.php?productid=21651&cat=357&page=1

I did the permetex trick to the diaphragm and its still leaking. OK correct if im wrong the purpose of the diaphragm is to seal where the top and bottom casing join. But my bov isnt leaking from the cap period. Its leaking from that small hole on the back.

Orangedsm95 said:

I did the permetex trick to the diaphragm and its still leaking. OK correct if im wrong the purpose of the diaphragm is to seal the where the top and bottom join. But my bov isnt leaking from the cap period. Its leaking from that small hole on the back.

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Cant you just seal up the small hole in the back and see if it fixes the problem?

I tried that and the car wont build more than 15 psi, i take the plug out 18-20psi all day.

I need help . I know someone has experienced this before.

Does anyone know if the ngr performance diaphragms will work in the rs bov? They look just like the original diaphragm.

I have the ngr and it is perfect. They used a better diapham than greddy, it is supposed to be the replacement of the leaky greddy

I would look into a Forge if I were you, they are good and they sound a lot better than any GReddy in my opinion.

Aproductions said:

I have the ngr and it is perfect. They used a better diapham than greddy, it is supposed to be the replacement of the leaky greddy

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Do you have the ngr bov or are you using the diaphragm in a greddy bov?