I've only just seen this - for some reason.
I am about to mess with the ignition timing on my GSXS using the Woolich Software but only in as much as I'm playing with the Unifying option.
The GSXS has 4 ignition maps, Neutral, 1-2, 3 and 4-6. The Unifying option allows you to choose one of those maps and apply them to all the others.
As far as I know, and by looking at the maps, it appears that gears 1-2 and 3 are slightly detuned. Reason being, I suppose, is that they were too aggressive as they were (is there such a thing as too aggressive? Lol). So I am going to see what that does.
I have a dyno, so I can sort of test it but it's tricky doing dyno runs in lower gears, so I don't know how that will work out.
As for changing the maps themselves, as opposed to only Unifying them, I would not get involved in that myself unless I was a racer and had a whole new level of expertise. And as the guy above has said, I would need to get a torque cell for my dyno, which is another $1,000.
So basically, I don't see the point in it at my level of riding and tuning skills.
You can see my progress if you take a look at the links in my signature below.