Have you searched Dynotronics skyactiv tunes on this forum at all? If you had, you would see that they have not once published a dyno graph of results for tuning a Mazda 3 skyactiv. Instead, complaints of people having their engines damaged, and experiencing big engine knock.
For around the same price, you can have a bench flash with proven results from a tuner that will not blow up your engine:
Their full custom tune is here:
Information on how it works:
Join the Mazda 3 Tuning group on Facebook if you have any questions that the website cannot answer. These threads are no longer active.