The Golf, like other big brand names is a "world car" - i.e. it's designed for a wide range of conditions, and is driven everywhere from Australia's baking heat to the blistering cold of Russia.
Lets be honest, in the UK we don't get extremes of temperature normally so this is just silly. How many flippin cars have you seen in golf+, max power, street machine, fast car etc wi cold air induction kits? If the warm feed was required then none of these cars would run right.
If you want a cold air feed then put one in and stop worrying about stuff like carb icing. You have, after all, SPI - Single Point Injection, no carb!
Ice only forms at very low temperatures. We might see those temperatures once a year for about two weeks.
