Duramax, Cummins, Power Stroke: the big three. Unbiased information on tuning, maintenance, emissions compliance, and building diesel power the right way.
2017-Present
2007-Present
2011-Present
The proven upgrades that Duramax owners swear by, from supporting mods to power adders that won't blow your transmission.
No fanboy bias. Just data, owner experiences, and real-world reliability information to help you choose.
Delete kits, tuners, and DPF removal: what's legal, what's not, and the real consequences of getting caught.
Real data from real owners on fuel economy loss with larger tires, and what you can do to minimize it.
Cummins 6.7L
Highest torque output, inline-6 simplicity, legendary durability under load.
Duramax L5P
Quietest, smoothest, best Allison transmission pairing for daily comfort.
Power Stroke 6.7L
Highest stock horsepower, responds extremely well to tuning.