Hawk HP+ pads are made for the Evo X that gets driven to, and on the track. The HP+ offers increased friction over the HPS, at the price of a little more noise (squealing) and more dust. Brake squeal is not uncommon in the HP+ due to the higher temperatures required for their peak friction, but once warmed up, this higher operating temperature will consistently allow your Evo X to brake more quickly, with minimal fade.
These pads are excellent for the occasional HPDE/track day or for the very competitive autocross racer. If your Evo will see more frequent track use, or competition-only applications, consider the Hawk Blue 9012 race compound pads.