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Old 09-28-2012, 12:10 PM   #6
Former Vendor
Member#: 322524
Join Date: Jun 2012
Chapter/Region: MWSOC
Location: Chicago,IL


Your intake and BPV should sound the same if the engine is cold or warm as neither of those parts have any sort of lubrication running through them that need warming. You are smart to stay out of boost until oil temp has reached safe levels. The change in temperature could cause changes in the noise slightly since the air will be denser, but in my personal experience it isn't anything that I've heard that worried me. As another poster suggested it's easy enough to take off the BPV, relube, and check visually for leaks; it might be a good thing to check the intake for any loose clamps too.
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