i need custom rom

I need custom roms for lava iris 400, 405, 454, 455

Google it bro.....

there is only one forum where you are going to find it i.e @xda-forum

i managed to find these helpful links,,,in case it's helpful
http://forum.xda-developers.com/showthread.php?t=2297376
http://forum.xda-developers.com/showthread.php?t=2452642
although could not find any available custom cm/jb/ics rom for any of your device
most probably this phone hasn't gain popularity among devs..

best of luck