blackfrohatch

help my wastegate will open with 2-3psi i wasnt getting much boost in the car then i took it out and used this little air compressor i had and put 2-3psi in it and the valve was opening. when i got it i ordered the .4 bar spring and that is about 5.88 psi. whats wrong here....the vac line is connected after the bov on the charge pipe. it has been connected to the turbo to and dose the same thing. should i just get a boost controler or should i call them up and get the right spring.

thanks
justin