Originally Posted by 4r3s

Personally I wouldn't take a tune lightly and just look for the place you can get it the cheapest. I would be looking for the place that has the best reputation and most experience. There are a lot variables to consider when doing a tune and there is potential to have your car seriously screwed up if done incorrectly. Its a $30k car, $700 is a drop in the bucket comparitively speaking.