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  1. Installed APR K04, CEL and possible Diverter Valve Issues

    MK6
    Rev Lag? Recently, I had the APR K04 kit installed in my MK6 GLI. A week after driving I noticed my RPM's, after rev, would lag at around 3k before dropping to normal idle. Along with this, i wasn't hearing my DV like I use to, or at all, when I only had a CAI installed. I did some research...
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