I Donated Too sigmafour Posted February 4, 2017 I Donated Too Share Posted February 4, 2017 AF - Air/Fuel Correction means What the ECU is doing to correct a lean or rich condition right now - adding or removing fuel from what it expected. AF Learning - A trend was noted and the ECU automatically applies correction AF "1" refers to the upstream O2 sensor and 2 means downstream - 1 Front O2 sensor - 2 means rear (after the cat normally) - You will see Bank1 and Bank2 O2 errors sometimes with the CEL lights. Link to comment Share on other sites More sharing options...
TheTurboRook Posted February 5, 2017 Share Posted February 5, 2017 Congrats! I just bought the same car a few months back and recently joined this forum. I was new to the Subaru/turbo world when I bought this car. If you ever have any questions or anything, feel free to private message me. I've asked a bunch of newbie questions to people on here already, so I might know some answers if you have basic questions :-) Link to comment Share on other sites More sharing options...
GTEASER Posted February 5, 2017 Share Posted February 5, 2017 Looks like a well cared for car. Welcome to the boards, lots of reading and learning ahead... good luck with her, and have fun! He won't be able to monitor wide-band AFR like that off the stock sensors on the AccessPort as is (T/A has product for this however, haven't seen it in action). I watch AF learning 1 instead. Sorry, forgot that the 4th gen doesn't have a stock wide band, although the one we have on the 5th Gen isn't as good as an aftermarket wide band. GTEASER's 2012 Legacy GT - Sold GTEASER's 2009 XTeaser - Sold GTEASER's 1992 Legacy SS - Sold Link to comment Share on other sites More sharing options...
LatentWagen Posted February 6, 2017 Share Posted February 6, 2017 Sorry, forgot that the 4th gen doesn't have a stock wide band, although the one we have on the 5th Gen isn't as good as an aftermarket wide band. Ain't no thang. Didn't know the 5th gen had stock WB... you'd think most half-decent cars would. Or should, for $30k+. LW's spec. B / YT / IG Link to comment Share on other sites More sharing options...
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