Category: Cars, Tech, Gadgets

The legendary Jeep 4.0L inline-six is known for its bulletproof reliability and off-road torque, but its factory exhaust system is a major bottleneck. Restrictive manifolds, crush-bent pipes, and a muffler that prioritizes silence over flow choke the engine's natural breathing. Upgrading your XJ's exhaust is one of the most rewarding modifications you can make—it unlocks hidden horsepower, improves throttle response, and replaces the wheezy stock note with a satisfying, authoritative growl. Here is everything you need to know about choosing and installing a performance exhaust on your Cherokee XJ.