I fitted mine a week or so ago and it's well worth the money. I was also due my first service so had to delay fitting it slightly but it's a definite improvement to the car.
I'm currently on Map 3+3 and it flies, especially once you hit approximately 4.5k.
When I first put it on, I was a little disappointed, however a little play around with the settings on it (and switching between mapped and unmapped) it really showed the difference. I think this is more down to how well the car handles the extra power than a there actually being a lack of extra power. The back to back testing I did proved this.
I might give my torque/dashcommand app a go and see if it picks up the extra performance available.
Also, I've had no issues and it's already up near 30 degrees most days here.
