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Swamp Fox Customs

In late 1999, Cummins changed their advertised HP ratings.  Add 10hp to these numbers for newer engines

When you up-rate your engine, keep in mind that the Drivetrain, Inter-cooler, and Cooling system may also require modification.

Computer re-calibration is required for most changes. Available at most Cummins dealers for ~$250(This is NOT a quote)

This chart is provided courtesy of Cummins Southeastern Power.