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An easy route to more horsepower...
...Is to fit a free-flowing exhaust system. The stock Jeep Cherokee 4.0 exhaust is very restrictive. Much of that restriction is in the crushed stock front exhaust pipe (it necks down from 2.25" to as little as 1.75" in diameter at the bends) and the stock catalytic converter.
The best solution is to replace THE WHOLE EXHAUST SYSTEM with a tubular header/front pipe, high-flow catalytic converter, and a high-flow muffler with tailpipe (cat-back).
The result is a gain of 15-20hp.
Magnaflow specializes in superior catalytic converter and exhaust technology and each converter is designed to the exact original equipment specifications while keeping the Check Engine Light off.
|Borla Cat-back Exhaust systems
Each system is built from premium T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer-controlled CNC manufacturing ensures an accurate fit.
Best of all, BORLA® stands behind every system with a Million-Mile Warranty. Just what you’d expect from the world’s most experienced (and most winning) exhaust brand.
Flowmaster Force II Exhaust System
For the person who wants a subtle custom appearance with all the benefits that a Flowmaster cat-back exhaust system provides, S.O.R. (Single Out Rear) systems are the perfect choice. Force II systems deliver a mild interior and exterior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications and daily-driven vehicles. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
|Dynomax Performance Exhaust
SINGLE - 2.25" CAT-BACK SYSTEM - SUPER TURBO™ MUFFLER
DynoMax® Super Turbo™ performance mufflers exclusive flow director design channels exhaust flow and eliminates turbulence on most applications. The large internal flow tubes improve exhaust flow and reduce backpressure. Each muffler uses fiberglass matting technology to absorb unwanted interior resonance while maintaining a mellow performance tone. The 'Pure Unadulterated POWER' of DynoMax® Super Turbo™ mufflers are backed by a Limited Lifetime Warranty and exclusive 90-Day Performance & Sound Guarantee™. All Dynomax® Performance Exhaust Systems bolt on for easy installation. Your vehicle's complete exhaust can be quickly and easily customized with an emissions-legal premium performance system from Dynomax®.
Gibson Performance Exhaust System Kit
Because Jeep enthusiasts need power from idle to 3000 RPM, Gibson designed their jeep exhaust to enhance low and mid range power for climbing and towing. This single exhaust exits straight out the back, Complemented with polished Stainless Tip. Hassle free, bolt-on installation with professional looking results. Backed by a Lifetime Limited Warranty.
|Banks Power Monster Exhaust System
2.5-inch Single Exit, Turndown Tip for 1987-2001 Jeep Cherokee 4.0L, XJ