Re: New here ez s4 express lithium
For a stock EZ-GO controller tuning there is only one solution for me and that is Bob.
I installed a Navitas AC conversion kit on my TXT. There have been much accolades here on upgrades to the RXV's with the Navitas controller as well.
They also make a drop-in 600 amp controller for the S4 but I have not found a place where you can actually buy it. If Bob can't make it out to your place I would call Navitas. I think this is the next best option. They have fantastic customer service and I speak from experience.
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