I had the Carbon tune on my S60R. And I was very disappointed with it.
The car didn't feel any faster, and the dyno numbers didn't show any significant gain over stock dyno run.
Additionally, the first time I received the tune, it was spiking up to 25+ PSI, Lucky trying to tell me that it was something wrong with my car, and after three weeks, THREE WEEKS, after I another member pointed me to a thread on Swedespeed, and I emailed Lucky about it, he now changed his mind and said the tune is fucked up.
I've been on the down low about saying anything, but the truth needs to be told. If I ever get another Volvo, I'll definitely will NOT be going with ARD Tune.