High performance academy
 

I've watched a few of these webinars from this place about different aspects of tuning, and found it really interesting. Not your typical dumb'd down or opinionated garbage. If you watch them live you can even ask questions.

I'm not affiliated with these guys, just sharing incase others are interested in learning about more complicated stuff.

They use a gt86 as their test car in some of the vids, which is what lead me to them.

http://www.learntotune.com/pro-tuner/webinars/

Cool, thanks for sharing!