Tune the car 1-2 times?! i don't think so, i constantly change stuff on my car, it's not just air fuel, it's trans setting, cooling system settings, speed limiter settings, traction control, ect. Trust me there will be more than just 2 times you tune the car. The point of having it is so you can change whatever you need to on your car to maximise the hp output in any temperature. I would never pay someone 500 to tune my car, that's just stupid, nor would i let someone send me a pcm that "might" work on my car. Fuel trims are very important to get correct and a mail order pcm isn't going to do that imo. It's worth every penny to buy your own tuner and do it yourself. It takes quite a while to dial in fuel trims with my own tuner and to think that a mail or pcm will even get it close is.... haha... riiiiiight.