1990 300zx z32 Twin Turbo
 

90' TT I am fairly new to the z32's I am having some boost controller issue. I have a Greddy Spec II that has been hooked up for about 6 months now worked great, out of the blue it stops working. It will not let me run anything higher than factory boost (10psi with supporting mods) it does nothing no matter what I set it to. Any ideas?