We never recommend a vent to atmosphere BOV on a MAF-based car, but If you insist on buying one we won't stop you. The HKS SSQV is the only blow-off valve we offer on this site, because it is the biggest, baddest, loudest, and most JDM BOV. In the world.
This kit includes a mounting flange for 2008+ STI intercooler. Also includes fitting to recirculate to inlet, or a plug for VTA.
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Manufacturer HKS Part # 71008-AF013 Made in Japan MSRP $395.00