Check out
http://www.adaptronic.com.au/index.php
I am running one of their ecu's on a supercharged lexus motor in my cobra. The ecu has traction control, launch control, boost control, flat shift self tuning as well as a million other features and will run any engine.
The traction control is adjustable from a pot on the dash as well as in the software. I had to make up a speed sensor for the front wheel (jag hub) that needed a bit of sorting but it works great now and the traction control is very adjustable or even switch it off to let some smoke out.
The traction control works by first pulling timing and then either spark or fuel depending what and how much you define in the software.
The self tune feature means you can pretty much just go for a drive and it tunes itself.
Very happy with the results, and saved a fortune in dyno time.