I wouldn't have thought of myself as a noob after 12 years owning Cummins trucks but, I found a 2007.5 c&c truck with the DPF removed, no tuner, no bung resistors.. I thought all 6.7 trucks needed a tuner to remove the DPF. The seller said that the early 6.7 c&c didn't need a tuner. Thoughts?
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