Here is another review of FASTuuN.
You can see it yourself here:
"Hey Joe! You guys at Fastuun have been truly awesome for creating a solution like this! Now I'm able to understand the tuner language when dealing with tuners at work.
Ive just finished watching the whole course, and you're absolutely right about it being full-packed in info. I'll probably watch it again on some parts. I got myself a wideband and have applied some of the lessons into tuning my own car. But im doing it only on weekends, or whenever i find free time. Good thing I can do this at my own pace.
If I learn the art well enough, im gonna bug you guys again about the certificate ok? Thanks man!"
FASTuuN EFI Simplified