Cold Air Intakes
They’re basically for show for V6 Mustangs. You will get a small gain from one, but nothing too noticeable. Look on eBay for cheap ones, about 100 bucks I got mine after shipping. They don’t suffer in quality at all. As long as you get once that is smooth inside instead of ridged like your stock airbox your accomplishing the basic concept. Look for one with minimal bends, I have been told one 90 degree bend is like adding 3 feet of straight pipe to your intake. There is no difference in the Blue Filters compared to K&N. The blues are made by Holley, same people that make Nos.