EMU. kyosho uses a proprietary interface between the main board and esc, so unlikely that any non kyosho rx will work. I had placed an order for an evo pcb and asf rx in hope to get it before the PN race. I figured it wouldn’t. It saw the KO name listed on the box. I’d prefer the KT-531. Just getting tired of waiting. Though I’m getting feeling that out MiniZ racing is going to be extended. And that they guys are planning something.