Relieve the fuel pressure. which is located on the fuel rail in front of the regulator. you will see a black cap. Unscrew it and press the pin down. keep your face away and have a rag around. One thats done, it's fairly simple. You will need an torx bit (size 10T) but make sure is has aq little hole in the middle. its some kind of locking device and most auto parts store have this. Unscrew the torx screws and the regulator comes right off.