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urbanj
A buddy of mine works for Cummins. His job is running the dyno either breaking in their engines or doing engine diagnostics. Lets just say they don't baby them on the dyno. Break in can be the difference between running a million miles and having rated power for a long time and not. Break it in how you feel. For those that like to set it and forget it, follow the manual. But there is a better method to this madness.