need bb Posted December 20, 2016 Share Posted December 20, 2016 I was recently tuning my car and after completing some 3rd gear pulls I noticed my AFR correction was at -25% at idle. My AFR corrections are usually within 5%, so I am trying to figure out what changed. At first I thought my O2 sensor was shot, but my wideband matched the O2 sensor. This sounds like a boost leak, but I thought that they usually caused the car to run lean instead of rich. Any ideas would be greatly appreciated. Link to comment Share on other sites More sharing options...
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