Yes mate, it improves acceleration.. Makes you feel like you've got an extra 50 horses I would say.
There are a few threads about it on here.
In the short time that I had it on there I noticed that pulling away etc felt much nicer as well.
I don't think that it is any stronger but it's been well put together and I guess you could argue that it has less strain on it as the gearing is lower.
The down side is that your top speed will be lower but it will still be above 160, possibly 170 depending on your wheel tyre combo and rev limit
