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50-State-Legal Walker Jeep Catalytic Converter Swap

JP Magazine

50-State-Legal Walker Jeep Catalytic Converter Swap

Tom Morr December 20, 2019

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50-State-Legal Walker Jeep Catalytic Converter Swap

Tom Morr December 20, 2019

Jeepers who have to pass emissions tests usually know that exhaust modifications downstream of... » Read More

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Jeep Six-Cylinder 4-1-1

Trenton McGee December 6, 2017

The lowdown on all Jeep six-shooters... » Read More

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TJ LS1 V-8 Conversion: Part 1

Bruce W. Smith July 10, 2016

We pull a 4.0L I-6 out of a 2000 Jeep TJ Wrangler and plant a 5.7L Camaro LS1 V-8 in its place.... » Read More

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Clean Air: Good For Tree Huggers and Engines

Stuart A. Bourdon June 26, 2016

Jeep engines (all engines, really) need cool air to run at their best, but if that air is not... » Read More

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How To Gain Back Acceleration After Adding Larger Tires

Harry Wagner June 23, 2016

To gain back some of the acceleration we lost when we added larger tires to our LJ, we add power... » Read More

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Rebuilding The Oil Pump In An AMC 360ci V8

Stuart A. Bourdon August 12, 2015

Rebuilding the oil pump and adding a remote oil-filter setup on an AMC 360ci V8 engine in a 1979... » Read More

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Banks Stinger System Review

Ali Mansour May 26, 2015

We’ve been working on our ’04 Jeep Wrangler Unlimited for a few months now, and the... » Read More

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Swapping A GM 4.8L V8 Into A 1987 Jeep Wrangler

Jay Kopycinski April 29, 2015

We recently had the chance to follow along as Lamb Fab, a custom shop in Gilbert, Arizona,... » Read More

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1998 Jeep Cherokee Tune-Up - Reviving a Dead Indian

Pete Trasborg April 1, 2015

This story actually begins about two years ago. Trasborg was working on another couple of Jeeps,... » Read More

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Hopping Up An AMC 360 V-8 - The Hunt For Power: Part 1

Verne Simons November 6, 2014

While the AMC 360 V-8 had plenty of grunt down low, we never really got to rev it to a point... » Read More

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2014 Jeep Wrangler Radiator Install - Keeping Your JK Cool

Cole Quinnell October 20, 2014

We were among the first to get our hands on a Flex-a-lite bolt-in aluminum radiator and electric... » Read More

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Building A Stroked Jeep 3.8L V6 - JK Bumping

Pete Trasborg October 16, 2014

We’ve bagged on the 3.8L V-6 in the JK since the Jeep came out. It got pulled out of a minivan... » Read More

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2007 Jeep Wrangler Rugged Ridge Air Intake Install - Snorkling

Pete Trasborg October 14, 2014

We went with Rugged Ridge’s kit because of the factory-like look. We’ve snagged... » Read More

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2001 Jeep Wrangler TJ Radiator Install - Two-Hour Cool Down

Pete Trasborg September 1, 2014

The new radiator from Jeeps R Us is PN CC2101 and is a fully-welded three-core aluminum... » Read More

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1978 Jeep J10 Fuel Injection Install

Verne Simons January 29, 2014

A good fuel-injection system can compensate for altitude as well as other driving conditions.... » Read More

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Banks Ram-Air Intake System - More Air

Christian Hazel January 1, 2013

High-flow intake in 10 minutes... » Read More

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Jeep Wrangler TJ 5.9L Magnum V-8 swap

Ali Mansour July 1, 2011

More Mopar Part 1... » Read More

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Fool-Proof Fuel Injection

Christian Hazel July 1, 2010

Part 2: So How's It Drive, Already?... » Read More

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Top 10 Dumbest Jeep Engine Swaps

Christian Hazel June 1, 2010

Against The Grain... » Read More

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0 Horsepower For $0! - Jeep Wrangler YJ No-Buck Tuning

Christian Hazel May 1, 2010

But Maybe A Little Better Driveability... » Read More

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About JP Magazine

Established in 1996, Jp Magazine has become the world's largest Jeep-only brand -- an entertaining, do-it-yourself manual of sorts aimed at Jeep owners looking for ideas and insight into modifying, restoring, maintaining their Jeep. Jp also unabashedly celebrates Jeeps and the Jeep lifestyle and does it all in an entertaining, fun, and sometimes controversial way.

Each issue of Jp contains features on the hottest and most outrageous Jeep builds, product information and shootout comparisons, how-to features, and performance testing. Jp also covers the biggest Jeep shows and 4X4 events across the U.S. and beyond – including trail rides, mud bogs, off-road competitions and Jeep-centric racing. From the latest Jeep concept to out-of-production models such as the legendary CJ and early Cherokee, from the enthusiast's driveway to the showroom floor, if it's Jeep related, Jp is there, with extensive coverage designed to inform, engage, and involve Jeep enthusiasts, wherever they are.

Jp Magazine also has inside access to Jeep designers and engineers, often relaying what Jp loyalists have to say about the latest Jeep and Mopar concept vehicles as well as their ideas and concerns around present and future production models. Few magazines have the ear of those in the position to give Jeep enthusiasts what they want and need like Jp Magazine does.

The Jp editorial staff of is comprised of real Jeep enthusiasts with extensive hands-on wrenching experience who communicate to readers in a lively and engaging manner. They live on the trails, help set the trends and are immersed in the Jeep lifestyle. Their project Jeeps take readers through the entire process, from buying to building to hitting the trail, with features ranging from “What if...?” to creating a powerful Jeep on a shoestring budget.

Bottom line, if you're into Jeeps in any way, shape or form, there is no better place to find what you're looking for -- in print or on the Web -- than Jp.