I was thinking about purchasing a K&N Cold Air Intake Kit for my 2003 ford expedition. I just wanted to make sure im not wasting my money. I was told its good if you want to tow things, but my vehicle is not for towing. i was also told that if i was purchasing Chrome rims thta because they are so heavy , this would be also a good purchase. i just wanna know if its beneficial if i purchase. I want nothing but the best performance from my vehicle but i also dont want to waste money if i dont have to.