Mach 2 TMS Recirculating Diverter Valve for Nissan 200SX S14/S15 (SR20DET)

If you want performance without the noise, the GFB Mach 2 is configured as a 100% recirculating (plumb-back) bypass valve, designed as a direct replacement for the factory unit on SR20DET-powered Nissan 200SX S14 and S15 models.

Sharper throttle response, faster boost recovery

Using GFB’s Turbo Management System (TMS) concept, the Mach 2 is designed to improve boost response during gearshifts and brief throttle lifts, helping the turbo return to boost more quickly and making the car feel more responsive.

Boost holding you can rely on

Factory bypass valves may be built with protective strategies or compromises that can affect boost holding and response. The Mach 2 is engineered to address these limitations with a pressure-balanced design intended to hold boost reliably.

True bolt-on installation

This kit is built as a direct-fit solution. Remove the factory bypass valve and replace it with the Mach 2 — no extra adapters, no fabrication, and no vehicle modifications required.