Just checked mine as I use an xfi also... and mine is set at 4 by default... lol. I guess thats above the xfi?
edit: nvm saw the post, after it was just the sound type. Mine is set to War Tapes aka #4
You'd have to read the previous posts, too. This game actually does not support hardware at all. All audio is software-only. They did this because they're doing audio processing that is not possible to do with hardware. That setting in the .ini just changes the style of the sound, not whether it's using software, hardware, xfi, etc.
As for +fullproc, one of the DICE developers posted on twitter that this command is not used in the game. If people use it, it's just a placebo effect.
Thanks for your respond i all ready read all for that fov from settings is ok but the gun it is not in the center like MW2?
What? Are you talking about the position of the gun, or are you talking about bullets not firing to the center of the iron sights?
I have not noticed anything weird or wrong about the position of the gun on the screen. It seems fine for me.
As for the bullets, the game does have bullet travel time. This means that over distance, the bullets will fall off. When sniping, you have to actually use the mildots on the scope. And if you're trying to shoot someone far away with an assault rifle, you need to just account for the fall off yourself.
See this video for an example:
http://www.youtube.com/watch?v=ogUvfkQJmys
I've gotten a +500 marksman headshot. :)