When driving on uneven ground or unpaved surfaces, horsepower is extremely important. A JK that doesn't have enough oomph may not be able to make it up and over a steep sand dune or through a deeper-than-expected riverbed. One simple and inexpensive way to improve the horsepower and torque of your Jeep Wrangler JK is to make a few minor modifications to the exhaust system. Replacing stock parts with performance mid pipes should reduce backpressure, which will increase high-end power. Because they are easy to access, installing a new Mid Pipe is a job any amateur mechanic can complete in an hour or two. Pick up a tuner and intake for your JK and you'll have a powerful, well-crafted off-roading machine.