Fine tune your diverter or blow off valve for optimal performance. If you are finding that the valve is dumping more than required or you are loosing boost pressure it is normally an indication that a stronger spring is required. These springs available with different strengths are design to match with different turbo pressure ranges : Green (5-15 PSI) - Yellow (15-23 PSI) - Blue (23-30 PSI) - Red (30+ PSI)

Compatible with the following dump valves :

FMDV004, FMDVRMA, FMDVV4010, FMDVSUB01, FMDVMAZ301, FMDV008, FMDVC200R, FMDV5R, FMDVRMR, FMFOCSTDV, FMDVC200A, FMDVFRS2, FMDVMAZ3

- Select your color -

Sold as unit

Color coding corresponding to spring strength :

Green : 25% strengther than original

Yellow : 50% strengther than original

Blue : 75% strengther than original

Red : 100% strengther than original