No special tools are needed just a screwdriver. You can relieve pressure or not its up to you. I never do. I just unhook it. You can pull the fuse and start the car and let her die. Try to start it a couple of times. Pressure gone. The filter is right in front of the tank and is held in place by a big hose clamp on the mount. It has 2 rubber lines. It has 2 plastic clips that you will need to pull out - well maybe pry out. Then pull the lines off. Be careful because gas will still come out of the lines as well as the filter. then put the new one on the way the old one came off. Its like a 15 minute job. Good luck.