i know how it works, but thats not always the case. take for instance, the K20 guys that are spraying. alot of them use K-pro. and they have a flip switch map for the nitrous where timing is pulled and fuel is ADDED by the injectors, and not by the fuel jet. its a direct port system, set up as a dryshot, compensated through the ECU/injectors to run as a wetshot.