mxridr210

I picked up a 2003 evo 8 and it came with a link g4+ ecu. I have no knowledge about aftermarket ecu's. I want to run a flex fuel set up and I want to make sure I have everything before I take it to get tuned. I know I need a flex fuel sensor but I'm not sure what else is needed/not needed. I've seen flex fuel kits that come with the wiring and everything for the stock ecu but I'm not sure if it's different for the g4+. Do I need a harness for the flex fuel sensor? And where does it plug into? I'll be running speed density and was told I only need the intake air temp sensor and I don't need the 4bar map sensor because it's built into the ecu? Any help would be greatly appreciated so I can start ordering parts