Just a general note for anyone that is interested. I was going to buy a K&N, or similar, cold air intake system but the guy at the 4x4 store told me about the Toronado unit. I had seen them and figured they were basic over priced junk. Well, I bought one of them off EBAY based on the recommendation and, honest to God, I got 3mpg better mileage on the road. I just got back from Vegas and my mileage jumped from 17 on the road to just over 20mpg. My in town mileage went from 13-14 to a tad over 16mpg. They are on Ebay for around $48.00 or so and at the current $3.00 plus a gallon rate it will not take much to recover the cost. I am going to put one on the wife's 4x4 Surburban. It needs all the help it can get.