I just bought an R1 and the guy already had a greddy BOV on it and the car is all stock, but for some reason i can't hear the BOV at all. I'm not sure if its because of the fact that I'm all stock and i don't have intake or because there's something wrong, can you please help me?

Thanks

 

my friend has a eclipse gs-t all stock with the type-s bov and its laud, the torque screw might be very loose or super tight.

 

There is a screw ontop of the BOV, Tighten it down and it will be a lot louder.

 

I tried both having the screw on hard and soft and it still doesn't work. Any other suggestions?

Thank you very much for your help

 

Most likely the vacuum line that goes to the BOV is torn or has a leak in it, which is not actuating the BOV. Go buy a new vacuum line and it should be fine.

 

where is the bov mounted?

 

take of the bov and flange and losen the torque screw and push the piston in, it might be corroded shut, you might have to take it apart, but its easy!

 

I too have the type-s installed in my FD. When I first installed it, the screw was tightened towards the "hard" side. Didn't get much sound. I then loosened the screw all the way towards "soft", almost until the screw came off. Sounds fine now. I still want an HKS SSBV, but that's a whole other thread. (^_^)

If you have it set all the way to soft and are still not hearing anything, perhaps the valve is stuck shut, or perhaps there is a problem with the vacuum line. I do hope you are not damaging your turbos by not having that valve open!

 

I installed mine today, I can't hear it at all. I purchased it used, but the car seems to still drive the same (actually a little smoother), I just don't hear it at all. I know the vacuum hose is ok because the stock BOV worked fine and it was loud...(quite a bit louder than the Greddy type S I have in now).
Should I take it apart? Is there somthing that needs to be cleaned?
One strange thing was when I drove the car when I put the Greddy BOV in, some oil substance came out of that other hose pipe on the top of the BOV. Is that normal??? The Bov makes more of a "Cha chunk" sound...is that ok? it isn't loud, but I hear that instead of some sort of "pssssht".
Thanks
-Dave

 

I just installed mine couple days ago, its freakin loud with the hood up, but with the hood down its just a little louder than stock, its probably due to the sound/heat detenation pad attached to the hood, you can remove it for a louder sounding blow off at the cost of your hood warping from the heat... so I don't think its really good trade off...

if you want a loud BOV get the turbo xs RFL (RFL stands for Really Fukcin Loud) lol

 

i'm not saying this is the correct way to have your bov setup.... but here's a way to make it louder. take out the 6 allen screws (think all screws are 3mm) on top, open it up and pull out the middle spring (should have been 2 springs in there when you opened it). put it back together and back the stiffness spring out all the way (make sure to be ready to catch it when it drops out). then put it back in and tighten it till you feel some tension like it's finally pressing on the plunger. should be set... if it leaks boost just tighten down the stiffness adjust ontop. good luck..

ps. my greddy type S has been used as a paperweight for a LONG time..

 

I tried pushing on the plunger, and it is really difficult to do. It will go back up in there but it isn't easy. And when I changed the tightening screw it didn't seem to affect the stiffness of the plunger....is it a noticablly change?
Pumped: It isn't that it is equal to or only slightly louder, I don't hear it at all. Keep in mind that I had my stock venting to atmosphere, and I also have this one venting to atmosphere. I can't hear the Greddy at all. I turned off the music and rolled down the windows....nothing except that soft "cha-chunk" sound.
-Dave

 

Be sure you don't set the spring tension too soft or you'll leak boost at full boost.

 

Bucrx7: Is there any way to tell if that would happen by pushing on the plunger?
Does the adjustment screw make a huge difference in spring pressure? Like noticable by pushing on the plunger?