The ROUSHcharger comes with detailed instructions, written very well by someone who actually did the installation. We can't stress enough that you need to READ these instructions completely first, before doing anything else. If you get out of sequence during the installation, you'll cause yourself a lot more work by having to uninstall something to get to something else. One other thing - after the supercharger installation, you need to run premium fuel. Take the time to run the regular out of your tank and fill it with premium before starting this installation.