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fuel trim

  1. RB (2012-2017) Accent
    Hi everyone. New here, and I have what may be a dumb question. I'm kinda hoping it is, and that I'm just missing the most obvious thing. I just replaced the catalytic converter and first oxygen sensor on my friend's 2014 Accent sedan with 161,000 miles, and am now in the process of figuring out...
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