Originally Posted by xluben
I don't know how many times I can say this but the spring does not depend on what boost level you run! You really just want the lightest one for the best response.
EDIT: but running the yellow with a little audible flutter is perfectly fine.
just to be sure, mine arrived today and from what i read, i should run the yellow spring, assuming it doesnt come with the green one. is this correct?
stage 2 car, 19psi