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I did a smoke test earlier today and made no progress. Original test I would only see smoke coming out of the intake filter. Took off the filter and plugged the turbo with a glove, wrapped it tight and pumped about 1-2psi of smoke from a home made apparatus and still no luck. It seems to be able to hold pressure well and the only place whistling or having escape of noticeable air is where I plugged the turbo inlet at.
The pcv hose that was originally connected right before the throttle body did have smoke come out of it when I d/c the hose from the intake which means this hose will also see vacuum when the engine is running. Could it be that this is where unmetered air is coming from since it is pulling air right at the intake filter? Also I've noticed there was a pcv valve installed on the hose to the rear of the intake manifold on some turbo and super charge builds. could not having that pcv valve there also cause a lean condition similar to a vacuum leak?
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