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  1. J

    Help: mostly a reader with a tuning question

    So I read a lot of threads and but don't ever post, but now im left scratching my head. I have a 2007.5 ccsb that I have done a efi tuner and dsp5 switch, exhaust, down pipe, and had the egr removed and blocked and some time back the right rear up pipe split at the egr bellow and so I removed...
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