Fabspeed Porsche 718 Boxster/Cayman Cat Bypass Pipe with ExperTune Performance Software

Why We Choose HJS Catalytic Converters:  HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light.     Increase exhaust flow by replacing the restrictive factory ceramic 750cell catalyst for a high flowing German imported 200-cell HJS HD EURO 6 certified catalyst to unlock the ideal blend of performance, efficiency, and increased exhaust tone.                     Fabspeed Motorsport is the largest distributor of premium HJS catalysts in North America, and second largest in the world. Based off years of engineering experience and worldwide testing we've selected the