Multiplayer doesn't work for me, so I only know that this works in SP:
for FoV there are 3 console commands:
cl_FoV (this is the standard FoV)
pl_movement.power_sprint_targetFoV (this is the FoV you get when you're sprinting)
r_DrawNearFoV (this is the FoV for your weapon)
Just open NotePad and type these commands, then save it as autoexec.cfg and put it in your Crysis 2 folder.
I use:
cl_FoV = 75 (55 is the standard, but just like you I want it increased

)
pl_movement.power_sprint_targetFoV = 90 (I put this a little higher than the standard FoV, this gives a cool effect when you're sprinting)
r_DrawNearFoV = 55 (I use a little lower FoV for this because it makes my gun look bigger XD)
Hope this helps, but again, I'm not sure if it works in MP =/
Thanks but i know commands,i'm using an advanced graphic editor and it create an autoexec but in MP it doesn't work

Thanks again

aww that svcks... this game has so many issues =(