Wastegate spring colour

[denniselbows]

since uprating my ecu this week my car is now running 1.4 bar boost (or should be) and have been thinking do i need to change the spring in my forge 007 dv or is the standard one (green i think) up to holding it closed and not leaking. the dv is not that old less than 6 months old any thoughts welcome

[Jeffer]

The spring doesn't need changing. The boost actually holds the Pop-off valve shut, not the spring.

[denniselbows]

thanks jeffer that makes sence. so how come there are different spring rates? is it more for how much boost is dumped when operated for example if you go up a spring size the dv is harder it is to be opened so less boost pressure is dumped? but if you go to stiff you risk stalling the turbo