Magnet to override 2001 GEM controller

I have heard that a magnet can be installed that allows to override controller speed controls. When I get up to 27/28 MPH the car shudders a bit to slow itself down. I would like to eliminate this from happening. Any suggestions?n

“Magic Magnet” - one of Dave @Inwo 's inventions. It will remove the plugging you are experiencing by ticking the controller into thinking you are going slower than you actually are. It works quite well. Takes all of 30 seconds to install.