Megan Racing Stainless Steel Turbo Outlets help increase the exhaust flow right where you need it the most in your turbo-charged vehicle--right after the turbo. Alternately known as an o2 housing, this unit frees the exhaust flow between the turbo and the down-pipe, which is most often a bottle-neck in turbo-applications when the task is left to OEM Cast components. Valuable horsepower can be gained by upgrading to our turbo outlets which allow your turbo to flow exhaust gasses more efficiently. (NOTE: The turbo-outlets are for off-road use only and is not intended for use on public highways.) The most overlooked upgrade to any Turbo Exhaust system is often the OEM Turbo Outlet or O2 Housing. With the 4G63 engine in the Mitsubishi Lancer Evolution being a popular choice for a forced-induction vehicle from the factory, Megan Racing has developed an alternative to the restrictive OEM Turbo Outlet by developing an alternative, constructed of 100% T-304 Stainless Steel mandrel-bent exhaust pipes that are conjoined into a smooth transition to keep the CFM of the exhaust gasses high to minimize restriction as much as possible. This allows reduced turbulence in the exhaust path and allows the Turbo to spool up slightly quicker to obtain power at a lower RPM. Designed to be used with the stock turbo, or stock replacement turbos for the 4G63.The turbine outlet elbow reduces turbo lag producing a noticeable power increase, maximizing the entire power band. The turbo outlet allows peak boost to arrive at a lower RPM for a more usable power band. A divider wall is strategically placed between the turbine wheel and the waste-gate for better flow. Specifications & Features:- Designed for use on OEM Turbochargers.- Smooth mandrel bends flow better than OEM Turbo Outlets- All hardware is included for a direct bolt-on fit: 1 gasket and nuts/bolts- o2 Sensor Thread Pitch: M18x1.50NOTE: All Megan Racing Exhaust and Suspension products are deemed for "off-road use only"-- please check local laws regarding the modification of the exhaust systems by checking the vehicle code for your state. Many states are more stringent on exhaust modification laws and to pass SMOG. Please check your local laws.