Fine tune your Blow Off or Diverter Valve to the exact needs of your engine with this complete tuning kit.
Fine tune your diverter or blow off valve for optimal performance. Kit includes four springs of assorted strengths.
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.
Please note – fitting a stronger spring into a valve will not increase boost pressure unless existing pressure is being lost. Failure to allow the valve to operate by installing a spring which is to strong may cause damage to the turbocharger.
Valve Spring color coding
Green – 5-15 PSI
Yellow – 15-23 PSI
Blue – 23-30 PSI
Red – 30 + PSI
