In your valve tuning kit you will find four springs. The strongest spring is the red followed by the blue yellow and finally the green which is the weakest. We normally supply our valves unless requested differently with a spring that will match the tension of the manufacturer’s original fitment valve.
However as many owners undertake tuning modifications some may wish to re-tune the valve characteristics to suit a given application. 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
Please note - the red coded springs should not be installed in the DVR or DV007 diaphragm valves
This Part Fits the Following Vehicles
|Audi||C4 S4||Quattro||20v T|
|Audi||C4 S6||Quattro||20v T|
|Volkswagen||Jetta IV GLI||All||1.8T|
|Volkswagen||Passat B5||4 Motion||1.8T|