Torque Solution Cast Aluminum HD Hard Turbo Inlet (84mm / 3.3" FP Turbo Inlet) - 2002-2007 Subaru WRX / 2004-2021 STI Subaru-WRX-2008 0 XT-R can only be

0 XT-R can only be built in a 3-inch compressor housing

The second issue is the intake noise box

also allowing the coolant to flow through the engine sooner thus reducing and maintaining cooler engine temperatures

By using a normal air cleaner

Saves weight by removing the factory mufflers

Torque Solution Cast Aluminum HD Hard Turbo Inlet (84mm / 3.3" FP Turbo Inlet) - 2002-2007 Subaru WRX / 2004-2021 STI Subaru-WRX-2008 0 XT-R can only beTorque Solution HD Hard Turbo Inlet Pipe Cast Aluminum 84mm 3. 3" Coupler Features: Cast Aluminum Black Anodized Smooths and Increases Airflow Entering Turbo Eliminates failure prone corrugated rubber hose 4 ply Silicone Couplers Includes Silicone Friendly Stainless Steel Hose Clamps Direct Fitment Includes All Necessary Hardware To Install Able to be installed Recirculated or as Speed Density Limited Lifetime Warranty High Flow Cast Aluminum Turbo