youre diving into something most would recommend you ONLY do with VERY VERY DETAILED AND THOROUGH KNOWLEDGE.
the ecm is the brains of your bike and therefore youre doing BRAIN SURGERY.
first off, you always always alwasy save your stock eeprom in a safe place (multiple places even) incase anythign at all goes wrong you can reload stock eeprom and start back from the beginning.
youll get somewhat differing opinions on premade maps but im going to throw mine out here just incase.
they're somewhat BS, the best and most efficient way to get YOUR BIKE SPECIFICALLY, to RUN TO ITS MAXIMUM POTENTIAL is to tune based on these criteria:
1. THE bike you ride on a regular basis (k&n, muffler, etc.)
2. WHERE you ride on a regular basis (altitude, weather, humidity, etc.)
3. HOW you ride (track, city streets, if for some reason you only put your bike on a dyno, you installed wings and you fly your bike, etc.)
A PREMADE MAP DOES NOT TAKE ANY OF THIS INTO ACCOUNT, and this is also why some bikes run GREAT on ebr ecms and some will not even start NOR run PERIOD, and some will run like complete *******.
all of this is done through datalogging your bike (done with ecmspy) and then making corrections and designing your own fuel map and eeprom----or if youre scared to learn or scared to even bother at all you have someone like theoctopus do all this for you. the tuniversity link is on the right side. ive talked to him before and talked to people who he has instructed and he is VERY good at what he does. i would highly highly consider paying him to walk you through this process, YOU WILL GET WAAAAAAAAAY MORE OUT OF YOUR BIKE, which will be better in the long run. diving into this sort of thing (it sounds like) they way you are, is going to be a very tedious and very dissapointing process because theres a million and half things to take into account to make your bike run really well
so with all that being said, pay theoctopus to SHOW you how to do it, or pay theoctopus to DO IT FOR YOU, he has different packages, just browse around and decide which one works best for you.