IMPORTANT: Install this AFTER you've installed the main files
_____________________________

If you think the sun is too strong with this feature, open the enbseries.ini and search for the line SunMaxBrightness=100.0 and change it to SunMaxBrightness=10.0 like this:

SunMaxBrightness=100.0
to this:
SunMaxBrightness=10.0

I don't really recommend this feature but some people like it, so you can just try it out if you wan't. If you don't know what God Rays is, let me google it for you: http://goo.gl/86dCRs

_____________________________
Installation:
Extract the enbeffect.fx inside one of the folders to your GTA IV/EFLC main folder.