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Project Paw-Paw: Part 9

With the engine and transmission mods complete, it’s time to reprogram the 7.3L’s brain: the PCM.

Stealth Bomber: A Tuned 2010 BMW 335D Diesel

This diesel BMW slips under the radar with stealthy looks and gobs of torque.

Project Paw-Paw: Part 8

You can’t quadruple a diesel’s torque output without upgrading the transmission, so now it’s time to bulletproof the E4OD.

Project Paw-Paw: Part 7

Double the flow and triple the boost—our 600hp 7.3L Power Stroke project wouldn’t be possible without a sizeable turbo upgrade.

Leading Edge: 9 Industry-Changing Parts from PRI 2019

High-flow turbos, near-bulletproof rear-ends, cutting-edge fuel system technology, budget engine blocks and more…here’s to a prosperous 2020 in motorsports.

Diesel Mecca: Inside Fleece Performance Engineering’s New 70,000 Square-Foot Facility

From pole barn to concrete superstructure in 10 years, Fleece Performance Engineering exemplifies the ultimate American-made success story.

SUV King? Chevy Debuts 2021 Tahoe & Suburban with IRS, Duramax Diesel Option & More

The Full Size SUV segment heats up with full redesigns and new options for Chevy's two iconic models.

Outlaw Diesel Super Series: 2019 Season Recap

From nail-biting index races to 4-second Pro Mods, there was never a dull moment in diesel drag racing this year.

Project Paw-Paw: Part 5

Our ’97 F-350’s transformation from farmhand to sleeper continues with the addition of a high-flow electric fuel supply system.

Cummins Owner's Gift Guide: Stocking Stuffers

Looking for the perfect gift for the Cummins owner in your life? These budget-friendly must-haves are sure to light up their Christmas.

Domestic Diesels: A Year in Review

1,000 lb-ft diesels, 10-speed automatics, a fresh EcoDiesel bound for Jeeps and an inline-six Duramax in the half-ton market. It all happened in 2019.

Project Paw-Paw: Part 3

Our sleeper 7.3L build takes a turn toward serious with the addition of big hybrid injectors.

Project Paw-Paw: Part 2

Addressing the 7.3L Power Stroke’s known weak links before bolting on our power-adders in our quest for 600 rear-wheel horsepower.

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