Stock Bov Not Working Properly

[mikel]

I have an R33 GTST with the factory plumb back BOV and a Pod filter.

Over the last 2 days I've noticed the BOV doesn't fire at all under gentle driving and only fires a little bit under harder accelleration.

Where the BOV usually triggered, instead I hear a fluttering sound I assume is caused by the excess pressure not released by the BOV going somewhere like back through the turbine.

I have not modified anything.

None of the vacuum leads are disconnected or obviously cracked or perished.

Is the factory BOV a serviceable item?

Is the factory BOV able to cope with 1 Bar of boost (I've been running 1 bar with a HKS 25/30 turbo since I bought the car 6 months ago) ?

Is it more likely to be the BOV or something else?

Is it the ECU that triggers the BOV?

will it damage anything if I drive it hard? - I assume lots of back pressure on the turbine can't be good.

cheers

Mike

[uraah]

take the bov off and have alook at the piston and see if u can push it up if not then maybe its ceased dunno if there a serviceable item but u would probably find one in the for sale section for cheap enough if ur boost pressure was to high ur bov would leak not stay shut and no ur ECU dont controll ur bov pressure opens it when ur throttle body closes

[mikel]

thanks Uraah