NG900 & OG9-3 Performance, Mods & Tuning
Hey guys, I just got my zzperformance bypass valve to replace my old, stock bosch valve. It came with three different springs; a stiff, medium, and soft one. My question is, if I'm running 10-12 lbs of boost at full throttle, which spring should I be using? I put in the softest since that seemed...