Description
GFB Respons T9003 allows the venting balance to be adjusted between recirculation and atmosphere to change the valve sound.
Selected entries in the manufacturer application list are Subaru WRX MY06-07 and Subaru STi MY03-07. These are manufacturer model-year labels, not a claim that every market, engine swap or modified intercooler has the same fitment.
Confirm the exact vehicle, original valve arrangement and installation requirements using the official instructions. Other Subaru applications and applicable emissions requirements need separate verification.


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