What was happening was that the new valves that I bought. The face of it wasn't flat like the OEM one. They were concave, which produced more compression. So when the engine was on with the added compression it kept the bov open at all times. Which in turn made me lose boost. I tried adjusting the bov but it still didn't work. In the end I just removed the damn thing and put my oem dv back on. The car is alot more responsive than ever.

 

is it a twin piston or just a single?

 

It was a single piston. The spring that was inside of it was like 4-5" long. And had a very high spring rate compression. If i adjusted for it to close then when I drive and boost it flutters. yah yah I know, shouldn't have gone with some half@$$& brand. Never do that again.

 

haha. scour vortex for a Forge 004 BoV. that thing is crazy loud.

i miss mine actually =(

 

the xo2 stuff actually isnt bad, the 004 knock off works really well. You just have to use washers instead of different springs, but i would bet that the forge set would fit in the knock off.