does anyone know what psi equals what color on the ssautoshit wastegate springs?

i've searched for a few days now and i can't find it. hook it up

mine came with two, a green and a red. the green was in it when i got it, then i swaped to the red because it seemed to only take me to 5psi

 

red should be 6 but green I don't know

 

thanks. any one know where there is a guide of some sort for these?