GFB Mach 2 TMS Recirculating Diverter Valve - Subaru 99-00 WRX/STi/B4 Legacy / 98-04 GT/XT Forester

This GFB Mach 2 diverter valve is set up from the factory for full recirculation. This means it vents boost pressure back into the intake system, giving you the performance advantages of a diverter valve without the sound of atmospheric venting. It's a solid option if you want improved boost response and throttle control for your Subaru but prefer a quieter operation.

GFB's TMS Technology is built into this valve, which helps ensure quick boost recovery when you shift gears and keeps your throttle response sharp. It's designed to handle boost pressures well over 100psi, which is more than most turbochargers can produce, so you know it's built to hold boost reliably. This is a direct fit, bolt-on part for many popular Subarus, meaning installation should be straightforward without needing custom fabrication.