RSF5- I bought this cheap set up on ebay for about $30. Didn't come with instructions of course. I am of the mindset that the less unnecesary plastic there is the better? Is the heat shield necesary or can I live w/o it for now? Obviously the colder the air the better. Is your filter hose bolted/secured somewhere? I haven't figured out how to lock mine in without building the custom 'house' for it (which i'll probably end up doing).