Looking for Control Unit Electron 21175-0287 oem or aftermarket , under $250
saw that its around 670+ not worth it for a rust dying utvI don't think there were ever any aftermarket ECUs available for the Teryx. There were piggyback units by MSD that allowed you to add custom tunes for modified machines. It looks like the OEM part is still available on Partzilla, I didn't sign in to get the price, I'm sure it is expensive. But, other than a used one of unknown quality, I don't know if you have a choice.