Lucas has posted some stuff on making some changes to his ECU and I think he also had an RX4 but he did this using ECU hacker which can handle the Delphi ECU's but unfortunately not the Lifan ECU's. If you look for ECU hacker it gives you all the information on the parts you need. I picked up a VAG KKL adaptor with aUSB plug on the other end from
Amazon for about $14 if I remember correctly. So you plug the adapter you have into the Vag KKL which goes into your laptop computer and the other side of your adapter into your bikes ECU diagnostic 6 pin plug. and with ECU Hacker installed you can start to play.