I've had an idea for one of my 3.5 campagin that there are these warforged augment packages. You install these packages on the warforged and it gives them boosts like +1 armor or +2 Strength or + 10ft speed. Is this fair? The augments are relativly exspensive, and warforged in my campagin can't use magical items that boosts their stats, ex: bracers of +2 Dex. I think this is fair. Is it?
So you're having them use expensive items to increase their stats. Yet they can't benefit from normal enhancement bonuses. It sounds like you're just renaming normal magical items. If that's not what you're doing, it's what I would do. No need to get anymore complex then that.
Ok. You're right about them replacing magic stuff. I just wanted it to sound special for the warforged.
You can totally still do that though :) It's just fluff and names.
Boots of Striding and Springing = Leg Piston Augments
Just have to make stuff up as your players want things or what you want to have ready ahead of time.