It's a very simple mod - just made the torpedo wakes brighter to make them easier to follow and spot with the external camera.
Nvdrifter is working on a more advanced mod I think, so this is just to fill the hole untill he finishes.
Here's the file:
http://rapidshare.com/files/24789124...pedo_wakes.rar
Just dump it in your sh4/data/misc folder.
Remember to back up the original file first.
EDIT: The mod is now JGME ready.
Here's a couple of screenshots to demonstrate the difference.
The old wake:
And the new one: