For many 5.9 Cummins owners, upgrading to a premium valve cover can make a significant difference in engine performance. John, a long-time Cummins truck owner, began experiencing oil leaks and a ...

The biggest fundamental issue with the turbocharger is that it requires exhaust gas to power it; thus, turbo lag, aka lack of ...

That's right, Cummins actually did it. They went ahead and dove headfirst into the gasoline engine market. If you ask us, ...