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Old 01-29-2020, 10:38 AM   #1
Scooby Newbie
Member#: 503104
Join Date: Jun 2019
Default AF Learning and Bad Gas Mileage

Stupid question, I have a 2013 Wrx, only mods are Cobb SF Intake, N1 catback, and Accessport V3. Currently running OTS Stage 1+SF 91 OCT, and use 93 gas from exxon. My AF Learning numbers are (-3.91,4.18) and AF correction 1 is (-21,14) normally. I am only getting around 14-16 mpg and drive pretty conservative. I let it warm up about 5 minutes, and my commute is about 15 minutes to work. Would this be caused by a boost leak? Or possibly a bad front O2 sensor? Any help would be appreciated. If needed I have data logs of 2 3rd gear pulls.
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