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I realize this has been done but if anyone has any ideas I'd appreciate a response.

I just have a couple questions that will probably be pretty easy to answer. I suspect the answers but I still want to ask.

I installed my intercooler recently and now it seems like I lost power, even with higher boost and when I'm on boost it's shaky. Matt was saying that a faulty DV may be to blame. Could a DV that never goes completely shut cause this? Another thing, I have a hairline fracture in my intake where the DV reintroduces that surge of air during shifts but I have an auto tranny so is it as cruicial and can it leak a lot of air? How does one test the DV, hook it up to an air compressor?

vrg3 wrote:I dunno. People just say it's supposedly a good BOV that withstands a lot of boost... I don't think it's really all true. I ranted in another thread about how I don't believe the hype about BOVs leaking boost.

I just used the 1st-generation BOV because it mounts on a pipe that fits really neatly between the Saab intercooler and the compressor outlet.

Reading this makes me think that if the sucker was partly open all the time I would have a boost leak but then again it feeds right back into the intake...where my fracture is. I'm just not getting good power.

It's possible... How do you have your DV plumbed? If you have it on the pipe between the turbo and intercooler, and if there's a lot of pressure drop in the intercooler and its pipe, even a properly functioning valve will leak some.

How big is the fracture? I had a crack there and sealed it for a long time with a piece of heater hose ziptied around it.

Unfortunately, the crack runs radially along the DV hose connection. It developed from pushing down working the bung back and forth. It's only hairline right now but it's a good inch and a half long.

I think mine's about that long, too... it goes a little past the base of that little bung. I guess I'll see it this weekend and see if there's anything I can help with...

Cool, it's much appreciated.