Designed specifically to increase power in the lower RPM Range! This put power where Jeepers need it most, between 1800-3000 RPM which is ideal for low speed off roading! Gibson's best performing exhaust system produces maximum torque and horsepower with a deep aggressive tone. Exits behind the rear tire near stock location and is quieter in the cab than any other performance exhaust. Fuel economy may improve as your engine becomes more fuel-efficient. Ideal system for towing. Heavy duty enough for off-road use. Typical horsepower gains average 15-20 increases.