what are the possiblities that this could be? my car was impounded and i jes got it back today. i can hear the bov but it wasnt like it was b4(use to be a nice wapst sound). i only sort of hear it at high rpms.

 

you could be surging. . .what kind of BOV is it?

 

You might be leaking boost

 

its a greddy type-s. i dont think im leaking any boost. my mbc is set at 8lbs of boost.

 

theres a little thing rite next to/below where the vacuum tube goes.....is this suppose to be plugged up? (its a little shinny silver thing sticking out). i also have a tial 35mm wastegate too. any help to solve my problem would be appreciated.

 

oh..when i was talking about that shinny thing i meant it was on the blow off valve

 

You can put the vaccum hose on either on of the "metal thingys"or nipples on the BOV it doesn't matter. . .serves the same purpose. . .hmm type s that's the same one I have and I've always have had that fluttering sound. . .kind of like the HKS super sequential. Then again my turbo blew last week. . .rebuild is on the way. . .thank God for Majestic.
Marc


[Modified by turbocoupe, 12:18 AM 11/27/2001]

 

have you readjusted your BOV yet? try that...worked for me.

 

take a look at your vacuum lines. mine flutters at low rpm (below 3k) but after 3k i get a high pitched whistle

 

read this article for more details on compression surge and why its bad
http://www.c-speedracing.com/faq/07.html

 

The upper most nozzle sticking out of the Greddy BOV should be attached to a vaccum source, the lower most should be left open, it acts as a vent for the diaphram (according to GReddy).