06 WRX Air Pump Removal - is it safe??
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05-01-2012, 06:48 AM
Fairfax Va, Henrico Va
99 outback sport
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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