I am in the process of replacing my power steering lines that runs to the hydroboost/steering rack and just wanted to understand how this system truely works. I heard it assists with braking and gives you firm brake pedal pressure etc. I also heard if your running wild cams it can mess with your braking because of the type of vacuum is being produced with cams. I guess you can say I have more questions than answers, but I just want to know how this system truely works. Anyone want to drop some knowledge?