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The GFB Hybrid TMS blow-off valve for 2015+ Subaru WRX and Forester provides staged dual-port venting that mixes recirculation and atmospheric venting for adjustable sound and behavior. Supplied with blanking plugs, it can be set to full recirc, 50/50, or full atmosphere and helps avoid airflow-meter issues while delivering faster boost recovery. The Hybrid is a direct-fit bolt-on offering tunable venting characteristics.
GFB HYBRID TMS Dual Port 15+ Subaru WRX / Forester
