Title: HKS SSQV - two different sounds for low and high boost
Product review: I had to get to a muffler shop to cut a piece of 2-1/4" pipe and weld in the adapter plate. This only cost me like $15. Be careful you do not use soft silicon hoses to conect the BOV, otherwise it will shrink under vacuum. Under low boost (<7 psi) this will give you a stuttering sound. Under high boost and quick shifting it gives you a loud whistling sound - which is very unique to other BOV's - and I love it! Of course - an open BOV is less than perfect for performance. You can run the optional recirculating fitting with it though. I couldn't tell what rated psi spring it's got in it though, but I have not had any boost leak problems due to this. I have been running 10 psi max for the past year (Gti-R SR20DET in a P11 Infinity G20).
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