What started out as a simple day of dyno testing left us with a bunch of things that make you go, "hmmm." We headed over to AEM's Hawthorne, California, dyno facility to put a Brute Force intake on ...

Remember when Jeep thought that the majestic SRT incarnation of the Grand Cherokee, with its naturally aspirated 6.4-liter HEMI isn't enough and decided to Hellcat the SUV? Well, Hennessey Performance ...

While some of you might find this difficult to believe, there are aficionados out there for whom the 707-pony factory output of the Jeep Grand Cherokee Trackhawk is simply not enough. Of course, there ...

Last week, we shared a short video of Hennessey’s Jeep Gladiator Maximus 1000 being put through its paces at the company’s facility. Now, it’s time to see what this insane pickup truck can do when ...

The 4.0-liter straight-six made famous for its use in Jeeps in the Eighties and Nineties is known for many things, but power isn't one of them. It's a workhorse motor, meant to take abuse and run ...

Remember the ’07 and ’08 Jeep Grand Cherokee CRD with the 3.0L Mercedes V-6 under the hood? Don’t be alarmed if you can’t. Like the ’05 to ’06 diesel-powered Jeep Libertys, Chrysler didn’t make a ...