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Old 04-13-2013, 07:57 PM   #18
Scooby Specialist
Member#: 321409
Join Date: May 2012
Chapter/Region: SWIC
Location: Arrey, NM
2015 WRX LTD


Originally Posted by gfv355 View Post
The car honestly feels like its running slightly lean. Also after pulling the spark plugs they were indicative of a lean condition. i changed the fuel filter already and noticed a problem with the car smelling of un-burned fuel on cold days generally a few minutes after startup.
Wild Guess...but your cat may be breaking up. That would explain leaning out along with triggering knock sensor.
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