| There are a lot of small vacuum/boost hoses running around the engine compartment. Best bet is to hook up a compressor to your air intake and listen for it. Common places I have read about recently are compressor outlet coupler becoming loose (vibrations), PRVR lines, EGR lines, balance tube orings, FPR/Damper lines... Youre shooting in the dark unless you hook a compressor up to search for it. This may help: [ http://www.thumper300zx.com/z32/boostleaks/boost_leak_guide.htm ]
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