I have briefly read about this product online and was wondering the amount of difficulty it is to tune your car with it. I'm not a stranger to cars but at the same time I am not the most technical person. Any feed back on this product or advice? Pros and cons of the product, any significant gains?

 

The ONLY reason is because it is cheaper and there are a few more tunning tools for it...then again that is changing rapidly!

Good luck

BTW I am running OBD-II in my 95 Z28 with no problems