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  1. VW Jetta / Bora MKIV 1998 Euro,1999.5 US -2005
    Ok guys and gilrs I know there has been tons of talk about the dreaded emission codes and how the Mk4 can be a pain in the ass to fix. I cannot for the life of me get rid of P0171 code (Bank 1 sensor 1 to lean). I own a 2002 mk4 1.8t. I bought cheap with a 170k on it now it has 200k and I...
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