As per topic, can anyone help? I currently have ease of use true grandmastery installed, but I would like to give 2 handed weapon style a small dmg bonus as well. Any help would be appreciated. TIA

Take a look at wspecial.2da (http://iesdp.gibberlings3.net/2da/2da_tob/wspecial.htm). (It may be in your override folder; if not you'll need a game editor like DLTCEP or NI.) Extra attacks for multiple pips are controlled by wspatck.2da (http://iesdp.gibberlings3.net/2da/2da_tob/wspatck.htm)

Thanks for the links. I have the 2 files in my override folder, but i have no idea how to edit them. How should I edit them if I wanted to give a +2/+4 dmg bonus to 2 handed weapon style?

Speaking of which, how are other bonuses like increased crit range, ac bonus etc implemented?

Ah, I didn't realize you meant weapon styles. These are, I believe, hardcoded and can't be changed.