The E-Z-GO PDS Freedom Speed Chip is one of three that EZGO has for the PDS cart. Each will give your golf cart a different level of performance. Some allow you to climb hills, others allow for the towing of heavy materials, but this bad boy is all about the need for speed. Now this will only work for the PDS EZGO systems that are 36 volts from the factory.A few easy ways you can identify that this is a PDS system are getting the serial number and giving us a call. We will run it through EZGO's database and tell you exactly what it is. If the serial number plate is missing, answering the following few questions will fill the gap. You must have a dash-mounted, toggle style-forward, and reverse switch. Another dead giveaway is the run and tow switch that is under the seat. You can order the golf cart freedom chip from Buggies Unlimited today if you have both of these items.