It has a strong presence from a unique blow-off valve sound produced from a sequential valve structure.
| Mounted Blow-off Valve | Revving (Inside of the car) |
Revving (Outside of the car) |
During driving (Inside of the car) |
During driving (Outside of the car) |
| HKS SUPER SQV IV | ![]() |
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| NORMAL | ![]() |
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| Manufacturer | HKS |
|---|---|
| Fitment | Toyota GR Yaris 20+ |
| Colour | No |
| Note | No |