Invidia Downpipe Catted Divorced Wastegate 2008-2014 WRX / 2008-2021 STI

  This is the Invidia Catted Divorced Wastegate Downpipe. The factory downpipe is highly restrictive by the nature of the design and begins right after the turbocharger leaving much room for improvement. Invidia really opens up the exhaust flow path with their downpipe by developing a unit that combines a larger piping diameter with smooth bends. This will allow the turbocharger to exhale those exhaust gases with fewer restrictions and turbulence for unobstructed flow right out of the cat-back exhaust system. Because of these reasons, downpipes make for the most popular exhaust upgrade that adds a substantial bump in both horsepower and torque with a great reduction in turbo lag. DETAILS:   304 stainless steel construction Divorced wastegate flange option separates the exhaust flow exiting the turbocharger 3" piping diameter Built-in high-flow catalytic converter Built-in O2 sensor bung Includes new exhaust gasket and hardware to connect the rear to the cat-back Increases horsepower Increases torque Reduces turbo lag Improves the throttle response NOTE:   TUNE REQUIRED - Because aftermarket downpipes will change the power dynamic of your vehicle, a tune is mandatory to optimize the power and running condition of your vehicleDoes not include the turbo flange gasket - It is highly recommended that you source a new gasket before the installation