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Old 11-23-2005, 08:41 PM   #8
Scooby Guru
Member#: 60324
Join Date: Apr 2004
Location: soon to be somewhere else
1998 RS


a post maf leak is a leak anywhere after your MAF sensor, and will allow unmetered air into your intake stream. This will cause your engine to injest more air than it thinks it has and cause your afr to run leaner than it's supposed to.
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