Ok I have a 98 z28 and I have an HPP3. After picking the correct settings (I am an M6 so I used the 3.42 gear setting) and setting the fans to run constantly, I seem to have some sort of whining noise when i accelerate above 3K rpm. Im just wondering if anyone else has this problem because im positive there was no noise before and the gears have never been changed so I know they are the stock gears. I will set it back to normal today if I cant figure out whats going on but any ieas would be appreciated. Thanks in advance!