GESI Catted J-Pipe (Downpipe)

The ETS GESI J-Pipe is a high-flow, catted downpipe upgrade designed to significantly improve exhaust flow and turbo efficiency on the VB WRX. Featuring a 3” mandrel-bent design and a premium GESI EPA-compliant high-flow catalytic converter, it reduces backpressure while maintaining emissions-conscious construction compared to catless options. This upgrade delivers noticeable gains in horsepower, torque, and turbo spool when paired with proper tuning. It also enhances exhaust tone—adding volume and a deeper, more aggressive character, especially when combined with aftermarket catbacks. ETS is known for excellent build quality and fitment, making this a go-to choice for owners looking to step into higher power levels while retaining a catted setup. 02 Sensor Socket Required Strongly Recommended to spray all bolts with penetrating beforehand