Honestly I think you may want to get an overview first of what the settings do from the manual, and if that isn't sufficient, post the messages on Tekin's thread.

From there, you will get a better understanding of what the product does setting wise, and then you can have a better handle on what to ask as it relates to your vehicle.

Since you are looking at running mod, to be honest a lot of the features of the ESC you probably won't need. Maybe current limiting to calm down the low end power to be honest.

I don't run a Tekin ESC, but with my Speed Passion one that has similar settings, in general with an 8.5 I don't use the timing, etc. features, mainly the current limiting or similar punch control.

8.5 motors give a lot of pop to the buggy. Now if you were running say a 13.5 in a field of 8.5s, etc, you may find benefits to the features of the esc.

Hope that helps.

Tekin is race quality, so it is proven in that sense.