[roadsterdoc]

Upsolute is perfectly safe. There were some CEL (check engine light) complaints about 5 years ago, but that is history. They offer real performance for a low price. Are they the best? I don't think so. Can they custom tune? No, but they do have different files depending on your turbo. Will your engine blow up from their tuning? No, there are no reports of unsafe tunes. Will you get a performance increase over stock? Yes. Will your car be faster than another car with a different tune and the same bolt ons? Maybe so, but probably not. Will it drive like stock (throttle modulation, etc)? It may be different, as with many other tunes. In the days when you could not buy programming anywhere for under $3000, it was a breath of fresh air. But now there is more than one tuner offering flashes for under $1500. If your goal is to build the fastest car that you can, go custom. If you want a power increase from stock and are on a budget, Upsolute makes sense to me.