It is sooooo worth it. The adjustability is great. I have installed a full Akra system and been down the PC route and didn't want to go there again. I wanted a "clean" set up not a PC plugged into to my eletrical system,then get a TRE to by-pass Kawi's epa /consumer safety detunning,and now you get pinging at low rpms so you'll probably need an ignition module, you also may have to do a TPS mod and adjust your cold high idle speed. Then factor in the cost of all these and for me, the kit ECU is the way to go. Just plug it in, get tons of adjustibility,load a map and ride.
Will it add horsepower not sure, great if it does, but not the reason I went with it.