EZGO Slow up hills

[Larry L]

Thanks again to you all! I've gone from a '55 Chevy Delray and an 861 Ford tractor to this '98 EZ GO that I've had now for about a year and I think I like working on the mechanical stuff on it a lot better than on it's two predecessors. Electrical, NOW THAT'S A DIFFERENT STORY!!!
Where I use my cart is hilly, rolling hills and not steep. The worst hill I climb is about 1/4 mile long and is a gradual climb. When I start up it I'm going full blast ,with no passenger, and by the time I get through the worst part of the incline I'm running fairly slow. I could live with that BUT, there are a few carts that out pull me and go on by me. On a flat run I run okay but it's those slight inclines I'm having trouble with.
My controller is supposed to be a high performance whatever amperage thight might be. (mounted beneath seat on pass. side in front of fender with no toggle switch on cover) Is wired with 6 ga. wires and running stock wheels. I know I'm leaving something out but that's basically it.
EMP MOTOR? What kind of controller will I need or will the one I have work with it? Need to upgrade anything else?
Sorry for the long post AND I HOPE I'M IN THE RIGHT FORUM!
Glad to meet you guys and I come to you HUMBLY with hat in hand asking for your advice and input. Thanks, Larry