Yes, and it's definatey made a difference. I don't drive like a madman, but it's easy to tell the difference on acceleration. I'm getting better economy now as well I think - I switched to 99 fuel to match the tune and it seems smooter as well.
Funnily enough, Mrs T thought I had royally screwed the Predator and I now have a new inTune as well. I've just removed the Predator and re-done it with the inTune. I guess the performance/economy will be the same with the new one as well. Either way, it seems I now have two tuners, so the Predator is now up for sale (or very shortly will be)...