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      01-13-2013, 10:40 PM   #6844
Jeffman's Avatar

Drives: 2008 335xi E90
Join Date: Jul 2010
Location: Somewhere in America

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Originally Posted by dominick View Post
so if im parked and im showing .2 or .3 on the cobb means I have a vacum leak correct?
Hmmm...mine says 0.0 psi. I'm nearly at sea level. Here's a WAG: Could your 0.3 be the result of an atmospheric correction for you? I think absolute pressure is 14.7 psi at sea level, so a few hundred feet - or thousand feet could cause the correction to be easily off by a few tenths. Unless you had a 0.0 psi earlier and did a modification to the vacuum system, I wouldn't necesarily jump to a vacuum leak being the cause of the 0.3 psi reading while idling.