Please help! My car idles in boost. It has been idling in boost since I've had the car for a couple months now. It's a 2001 9-5 with the 2.3t low output turbo. I've replaced several parts now, because it has been misfiring such as: plugs, DI cassette, crankshaft position sensor. Now it stopped misfiring, but it still idles in boost. My boost gauge (assuming I hooked it up properly) read between 0-.5 psi and with WOT it hits a peak of 6. It idles better with the vacuum line that runs into the intake tube unplugged. I don't know what to try anymore. Saab's are far from what I am familiar with.