The KKM is an open element air filter that replaces the stock airbox and it's internal air filter. Cold air induction typically refers to methods used to get cooder, external air to your air filter. Heat soak occurs when your air filter sucks in only hot (engine bay/radiator vicinity) air and performance suffers. Cold air induction and heat shields both help reduce heat soak. Some cold air induction mods hook directly to a KKM style filter. (Keep reading and searching, you've got the right idea...)
