Wednesday, September 24, 2008

K&N Air Filter

The K&N Air Filter is cheapest and easiest upgrade you can do and still expect incredible or, at least, reasonable results. Would you like a general Truck or Car Miles Per Gallon article, or a more basic article but still about a K&N Performance Filter?

First lets discuss the numbers of the K&N Air Filter:

K&N: CFM’s (Cubic Feet per Minute of air moved through a K&N filter): 881, for the round type and 441 for the sandwich type (this being the long and flat filtration)
typical disposable paper filtration CFM’s: 548 for the round and 319 for the sandwich type
STP: CFM’s

Having an air filter that allows more a CFM’s of air is only the beginning. Based on the conditions of which you drive, it’s typical to be able to drive 60,000 miles before you even have to clean your K&N Air Filter. What makes a K&N Air Filter different is that it has a metal screen strengthening a thin, precision made cotton wall against dust and grime. In laboratory tests this doesn't just allow more filtration with less obstruction than standard filtration by companies like Fram or STP, but the K&N Air Filter actually allowed a straighter flow past the filtration medium, which increases the delivered volume, which in turn makes the engine run cooler. Some vehicles get 8 more horse power, which if you're not too lead footed, will directly turn into less fuel consumption and better trucks or cars miles per gallon.

How does a K&N Air Filter really work?

For the most performance it is important for every surface that air passes over to be polished to allow for the straightest, least ruffled flow, which allows for a higher volume of CFM’s to get through the filtration medium. This is the reason cold atmospheric intakes are popular, it isn't just that colder atmosphere mixes with gas better, it's the fact that they're smooth and polished, which is just like a polished vehicle having less friction or tug against moving forward.

The smaller the engine the higher the demand on air because of the frequently lower compression ration of 8:1 instead of the standard V6 12:1. Typically, due to this basic engineering principle it’d make sense that a K&N Air Filter would do even more for a 4 cylinder, but the reality is that at least on one V6 sedan I’ve seen the gas mileage, miles per gallon, or fuel mileage, which ever you want to call it, go up just as much as that of a four cylinder’s engine, depending on your numbers perspective.

Consider this perspective while reading results from K&N Air Filters that AutoBravado has personally seen by comparing a V6 Ford Taurus versus a 4 cylinder Ford Escort and Chevrolet Prizm:
Notice a percentage versus a number increase in your truck’s or car’s miles per gallon. If you’ve gone from 20 to 24 in your truck's or car's miles per gallon you’ve increased the number by 4 but your increase in fuel mileage is 20 percent. In the mean time, if you see the same number of miles per gallon going up on a four cylinder, like from 33 to 37 then you may be seeing the increase by 4 but you’re actually seeing a 12.1 percent increase on the 4 cylinder versus a better 20 percent increase on the 6 cylinder. Auto Bravado has promised that the physics or math would be taken care of for you, but I think this concept is important if you’re going to understand what the better results mean when you’ve received better fuel mileage by installing your K&N Air Filter.

If you monitor your car’s or truck’s miles per gallon carefully it’s is highly unlikely, in Auto Bravado’s experience, that you’ll find yourself disappointed with this upgrade. For a personal experience on the K&N Performance Filter, read Auto Bravado’s other article by clicking on this link.

Research what K&N Air Filter's availability is for your vehicle here.


Remember AutoBravado's goal: The Cars or Trucks Miles per Gallon: We all want better numbers, but do we really know how to get them? Let us learn that to get results is to have fun! There are tricks that it took many mechanics decades of experience to figure out and perfect. The truck’s or car’s miles per gallon of the vehicle you own relies on more factors than most mechanics even know about. It is AutoBravado's commitment to stay ahead of the discoveries and keep you well informed. It is a basic concept of physics. If the engine is singing the sweet song of being tuned and other factors are in place, it will, by the laws of physics, require less fuel to get the same results. Contact Auto Bravado: autobravado.com@gmail.com.

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