Thanks everyone. Will definitely give it alot more thought but it sounds like installing a CAI and ensuring it draws cold air is the best bet. I've also been enquiring from CAPA and they reckon that they can install a custom supercharger kit for my car...cost around $8000 installed. They reckon I'd see around a 30% to 40% performance improvement but I'm not certain if the slushbox would be able to cope with the extra grunt.