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Old 04-30-2012, 11:57 PM   #551
1 Lucky Texan
Scooby Specialist
Member#: 46320
Join Date: Oct 2003
Chapter/Region: TXIC
Location: Outoftheblue&intotheblack
06 WRX Sportwagon
Aspen White


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?
zero noticeable effect. The entire system is only active for 20-40 seconds at a cold start. It replaced front cat converters.
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