Increasing Speed for a 2012 48V RXV Standard Electric EZGO

I have a 2012 Electric 48V EZGO RXV standard, and I am trying to increase the speed to freedom mode. I was thinking about purchasing a hand held programmer, but I don't know which type of controller I need and if that is all that is needed. I looked under the cup holder and notice a slot that had a 9 hole plug.

I need to know what speed controller I have installed in my cart and what hand held programmer would I need to increase the speed to freedom mode as well as do other diagnostic test. Will the Curtis 1313-4401 work for my cart and is this all I need? The plug I saw under the cupholder looks like the E-Z-GO RXV Handset plug (see attached pictures).

Any help would be greatly appreciated.

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Attached Images

	20160321_235347.jpg (211.0 KB)
	20160321_235447.jpg (204.8 KB)
	20160321_235758.jpg (199.1 KB)
	20160321_235730.jpg (211.7 KB)
	EZGO-RXV-Handset.jpg (7.9 KB)