This performance chip will increase your golf cart's speed by 2-5 mph. The chip is compatible with 36-volt EZGO 2000 and up TXT golf carts with PDS (Precision Drive System) only. This will not work with 48V systems on 2008 and up carts. If you're not sure how to tell if you have a PDS system, an easy way to tell is by looking at the forward/reverse switch. If your forward/reverse switch is mounted on your dash, you have a PDS system; if your forward/reverse switch is under your seat, you do not have a PDS system, and the chip will not work for you. Installation of the chip is a straightforward process that takes less than 10 minutes; instructions are included.