Performance Diesel Inc. (PDI) recently launched its Big Boss Tuner HD, a hand-held tuner designed for fast and easy installation that will typically deliver a 10 to 15 percent increase in horsepower ...
Steven Lenard owns this 2022 Kenworth W900L, which is powered by a 565-hp Cummins X15 with an 18-speed. The rig is equipped with a PDI tuner, twin turbos, intake and exhaust manifold. Lenard is the ...
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