Stainless Steel High Flow GESi EPA Cat

The STM Stainless Steel High Flow GESi EPA Cat is engineered for the 2001-2006 Mitsubishi Lancer Evolution 7/8/9. It features a robust, full stainless steel construction that is hand-fabricated and tig-welded in-house by STM. This high-flow unit integrates the 85030 GESi GEN1 ultra-high output, EPA-compliant catalytic converter, offering a significant upgrade over the factory component. It includes two O2 bungs, accommodating both the factory O2 sensor and an aftermarket wideband sensor, with an included plug for instances where a wideband is not used. The converter itself is a 300-cell GESi Gen 1 model, suitable for vehicles up to 2016 models, and is rated to support up to 850 horsepower. Installation is straightforward as it bolts to the stock downpipe and cat-back exhaust systems. The package includes all necessary hardware, such as Remflex 3-inch gaskets, M10 bolts, washers, and nuts, along with an O2 bung plug. STM offers a Limited Manufacturer's Warranty for this product. Note that this product cannot be shipped outside of the United States and is restricted from sale within California due to vendor restrictions.