How to Improve Car AC performance

I've ever read such topic at a famous malaysian forum, lots of the user has proven that wrapping the cold ac pipe in front of the engine can stop heat radiation from the nearby engine and improve the ac performance overall. dont know if i can post the link: http://forum.lowyat.net/topic/1435499 which indirectly point to that specific DIY article: http://www.unique-stuff.net/improve_car_air_conditioner.html Dear moderator: if you found this link is guilty ;) just delete it, i'm just trying to help other users, i dont own that forum either.. hehe..