Plus my vehicle is still under warranty with only <14,000 miles on it.
I just turned 19k myself, but I figure its better to get the tune now and enjoy the car rather than a year or two before I trade in (I usually keep a car about 4 years, and I've already had my 9-3 for a year).
The only part that gives me any concern is my automatic transmission. However, I'm figuring that a.) in '08, Saab upped the HP and torque out of the same exact set up, and b.) there have been documents posted which indicate the transmission is designed to take the torque.
I'm really hoping the tune turns what is already a "somewhat peppy" convertible into a sports car. Before purchasing my 9-3, I had test drove an SLK350 (just too small to be practical, but man that thing pleasantly threw you back in your seat). The SLK350 puts out 300hp- so I have high hopes!
Doesn't seem like anyone is using the DashHawk? Seems like this little device can show you just about anything you want to know about what's going on under the hood (if they would just format it into a round 62mm that would fit in a gauge mount, it would look awesome mounted on the pillar).