1. Fuel return to tank
2. Fuel pressure regulator
3. AIT (Air Inlet Temperature) Sensor
4. Injector
5. Mating surface (Throttle body to airbox, should be rubber seal on this)
6. Fuel intake for throttle body
7. Hot water line (return to coolant reservoir)
8. Feed from EVAP (charcoal cannister) - sometimes marked blue
9. Breather take off from cam cover - sometimes marked brown
10. MAP (Manifold Absolute Pressure) Sensor take off
11. Mating surface (Throttle body to inlet manifold, should be a plastick spacer inbetween TB and manifold)
12. TPS (Throttle Position Sensor)
13. ICV (Idle control valve) - sometimes referred to as IAC (Idle Air Control or Idle stepper motor
14. Hot water feed (from heater matrix line)