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SARD Racing Blow Off Valve: 89-94 S13/RS13 CA18DET (66021)
| Unique Valve type design which prevents pressurized air from escaping through intake pipe under high boost condition. 4 opening design for superior air releasing ability which provides faster turbo spooling while maintaining the best protection of the turbo charger. Upper body adjustment design for easy spring setting (no tools needed). |