Help with advancing timing

[MrNova]

I want to advance the timing in my Trailblazer SS and can not find anything that tells me how exactly to do it? It currently has a tune in it for nitrous and I want to make it more suitable for N/A and would like to advance the timing a little. I have searched for it and really have not found anything that gives a clear process? I have looked around in the spark advance table and that's where it gets a little intimidating. What cells do I focus on to add a little total timing? Or am I missing something and there is a place that plug in what I want my total advance to be? Again I appreciate any help as I'm obviously new to this and really want to get a handle on tuning.

[R0G3R]

You have to log your trailblazer with the scanner make sure you have your histogram setup to read timing advance..after a good drive for 30 mins or so stop the scanner and add to the cells that were hit while on the drive. Add 2° at a time and make sure no knock is present keep adding to those cells till it gets to your liking. Once finished it should be smooth.

[MrNova]

Okay thank you very much. Should I avoid WOT or all different driving conditions?

[MrNova]

Also can i command more timing and make other changes with the scanner or does all changes have to be made in editor?

[krazycarguy]

Older thread but it fits my question best. Brand new to tuning, and i want to start with something simple, my 08 avalanche 5.3L LC9, with CAI and exhaust. I've been reading around here for a couple days now, and cant seem to find a good explanation of what the histograms represent, and how to use them properly. If I understand correctly, at least for timing advance, the cells it marks are the cells i should change a little at a time, but untill what point? Untill the histogram reads zeros, or is that not possible? And what about the cells with negative numbers? I know I need to invest in a good how-to book, just havnt looked for one yet. Any help would be much appreciated.

[DWC]

Find a factor table and add 2 deg, scan , wash, repeat. When you get knock subtract 2 smooth, copy past to low octane table and subtract 2 from there as well on N/A.