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  1. J

    Do I Need To Tune??

    2010 Jetta TDI sedan, currently @ 178K. Getting close to the end of my extended emissions warranty, after having the "fix" done. Had a CEL, and the codes were p240f, p0401, and p2002, per my local, independent VW/Diesel mechanic. Also have a lot of soot on tailpipe. I had an appointment...