In most factory exhaust systems, the most restrictive component is the catalytic converter. Designed solely for emissions regulation, they quickly become a bottleneck, especially on a modified vehicle looking for performance. An easy horsepower gain is to replace the restrictive OEM unit with an aftermarket high-flow replacement. While keeping emissions legal, high flow cats allow more flow through them by utilizing larger cells. JDP offers the full line of Magnaflow direct-fit converters, which bolt directly in place of the factory unit and do not require welding in most applications. In applications requiring tubing, the direct-fit cats include mandrel bent stainless pipe, further reducing flow restrictions.