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Old 05-01-2012, 05:48 AM   #555
EvileyeZ88
Scooby Specialist
 
Member#: 233501
Join Date: Dec 2009
Chapter/Region: MAIC
Location: Fairfax Va
Vehicle:
07AD 337/335SAXWAGON
99 outback sport

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The primary function of this system is to add extra air into the cylinders during the first 20-30 seconds of cold start up to lean out the mixture a bit and heat up the catalytic converters so they work more efficiently.
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