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Ok, just got a scan. P0172 : System too rich (bank 1)
I had this issue too after I got my headers on. I replaced the front O2 sensor. after my headers were put on. I just don't get it. This might explain why I struggle to break 200 miles on a tank of gas ??
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CAI - Borla Cat-back - S&S Headers - DHP - AFPR
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