The additional nozzles are NOT included.
Direct Port Setup: Why would you want to install a direct port setup? Because injecting equal amounts of water methanol into each cylinder is critical. Also, it could be because you need to distribute the methanol through multiple spots in the motor to achieve better droplet size and better distribution.
Installation: You will want to install the this manifold upgrade after the check valve or solenoid. Then, we usually recommend putting each nozzle as close to the cylinder head as possible.
Application: Direct port injection is normally done with 4, 6, or 8 ports