IAG Performance Unequal Length Header & Uppipe - Subaru Models (Inc. WRX 2002-2014 / STI 2004+) PDM_light-mounting-and-hardware but as boost and power

but as boost and power increase

Available in multiple knob colors and styles — see other listings

This blow-off valve reacts very quickly to purge excess boost while creating that flagship HKS blow-off valve chirp

Powerful fuel pump for those building a fuel system for the Subaru WRX/STI

IAG Performance Unequal Length Header & Uppipe - Subaru Models (Inc. WRX 2002-2014 / STI 2004+) PDM_light-mounting-and-hardware but as boost and powerThe Unequal Length Header and Up Pipe Package will increase the exhaust flow in the Subaru WRX STI. IAG Performance Unequal Length Header & Up Pipe Subaru Models inc. 2002 2014 WRX 2004=2020 STI Specs: Durable stainless steel construction on both header and up pipe Unequal length layout Smooth mandrel bends Increased piping diameter Includes 3 bolt up pipe Increases horsepower Increases torque Produces the aggressive Subaru rumble Improves throttle