It seems to have a bit more power, it certainly revs easier and has a raspy note to it.

When I picked it up from getting done, I started the car and then sat there giggling as it idled! People waiting in traffic must have wondered what was going on.

It is definately louder.

It is a little hard to tell just how much of a difference it has made because it is not running the best now, it was perfect when I drove it in but I think I need to adjust the idle and timing a little to see if it smooths it out a little. It now has a surge of power higher in the rev range which is why I described it as a flat spot before, that's what it feels like before the surge.