About

Diesel Spec Inc. specializes in high-performance ECM tuning for heavy-duty trucks and agricultural equipment, focusing on custom diesel tuning to maximize fuel efficiency and increase engine power for major brands like Cummins, Caterpillar, Detroit, and Paccar. Utilizing a 2000hp water brake dynamometer, they ensure precise, reliable, and measurable results. The company also offers EGR, DPF, and UREA delete kits for off-highway tuning and competition applications, along with aftermarket diesel truck performance parts such as upgraded turbos, heavy-duty exhaust manifolds, and high-performance crank dampers. Established in 1987, Diesel Spec has over 400 reseller locations across North America and provides a 30-day satisfaction money-back guarantee on all tuning services.

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