You definitely can do tuning that way, the question is - do you know how to do that? If not, you might end up like me buying another ECU. You might find a close ECU map (bin file) - I might have a few - I'll look later today, but it won't be specific to your bike. Remind me what performance upgrades you have.
Either way, the PCIII offers a simpler and easier to manage way of doing things.
It is still available.