HKS Suction Return Kit

By using this suction return kit and the super SQV kit together, it is possible to perform suction return in the same way as the genuine air bypass valve, and it is compliant with vehicle inspection.
There is no sharp discharge sound like when the air is released, but the blowback sound from the air cleaner becomes easier to hear.

For more details please go through the below link...
HKS Suction Return Kit