Random Technology 49 State Catalytic Converter for 87-90 Jeep Wrangler YJ with 4.2L 6 Cylinder Engine

It's a common belief that all catalytic converters place a choke-hold on performance. Random Technology disproves that theory with their Super High Flow catalytic converters. Removal of a converter is not only an illegal modification but likely to decrease horsepower. Obviously gas mileage and horsepower vary, but by using a high-efficiency catalytic converter, an engine will produce maximum power while remaining emissions legal. Stainless steel construction with monolith-type ceramic/metallic bricks rather than pellets. Monolith-type converters are more efficient since their honeycomb construction provides lots of small passages for exhaust gas to flow. Not for use in California Emissions Vehicles.