Here's the story of perhaps the most legendary diesel engine ever made, the Cummins 5.9L.

It might seem like there isn't much to compare between the Ford 3.5 EcoBoost and the Toyota 3.5 V6 engines. But they have ...

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are ...

We load up and head to Nashville to buy WhistlinDiesel’s infamous 800hp twin-turbo second gen. It’s beat up, loud, sketchy, ...