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Old 05-01-2012, 10:29 AM   #556
Scooby Specialist
Member#: 4574
Join Date: Mar 2001
Chapter/Region: NESIC
Location: Bristol, CT
2014 Outback 2.5i L


Originally Posted by J-horn92 View Post
If you remove the air pump completely does it kill your mpg, or does it not have any effect at all?
The air system only runs at start up and pumps air into the head/exhaust to help heat up the cats. After about 30 seconds it shuts off.
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