Water Injection for 306 TD

[superstareddie]

Just a quick question, i have a Peugeot 306 TD with mods (see below) and will shortly be upgrading to a full front mounted intercooler setup aswell. Now since aquamist is just down the road for me it would be silly not to take advantage. I've read about a few 306 TD's with water/methanol injection and am wondering if its worth upgrading to water injection also. How effective is WI on diesels? Since i'm running an uprated setup on my car, heat is fast becoming a problem, so would upgrading to WI lower temps enough to make a real difference? :?