insulator

Im looking in to these at the moment.. Are these actually worth the price take or is it a con.... Bill Does them for £70 odd and id buy them if i knew it was going to do somesort of good.. Opinion please... thanks

saw this on the group buy section under badger 5 and it looks good call me stupid, but where does it actually sit? I am guessing it spaces out the inlet manifold? just thinking of buying one, but when I take it to the garage to get fitted, I at least like to know what I am talking about...

Just saw this product on the clean and shny website and wondered if anyone had ever used it ? If so whats it like ? http://www.cleanandshiny.co.uk/index.php?act=viewProd&productId=107