The use of this kit allows you to change from the factory Honda mag sensors in the distributor to a more precise digital signal from this sensor. Many aftermarket ecus read the Hall signal much better than they do the OEM signal from the distributor. A lot of times you'll notice a smoother idle & much smoother power at high rpm. This also allows complete removal of the factory distributor when a multi channel CDI box & individual coils are used with it. If you want to keep a single channel ignition box & the distributor, then this setup can still be used. These signals are on the input side of the ecu, while the ignition system is on the output. Any combination of ignition box/coils will work. The standard kit consists of 1 Golden Eagle cam gear that's been machined & custom fit with rare earth magnets installed in it, 1 Dual Pole hall sensor & it's mating connector, the billet sensor bracket, & installation instructions.