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Old 06-24-2008, 09:42 AM   #14
Scooby Newbie
Member#: 173774
Join Date: Mar 2008
Chapter/Region: Tri-State
Location: Upstate NY
2008 STi
Lightning Red


Originally Posted by awd-box-turbo View Post
i was going over the AEM UEGO manual and it comes factory calibrated and the settings are correct when i pulled it out... im idling at 14.7:1 - 15.3:1? could it be because i have a FMIC and a short ram? or could it be i have a leak at one of my injectors? from what i understand im either having too much are in, OR im not getting enough fuel in?
How is idling at 14.7:1 lean?

When you are off throttle coasting in gear (engine braking) you shouldn't even have a readable AF ratio. Sounds to me like you're fine, as long as AFR under boost conditions are acceptible.
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