Thread: Air filters - truth or myth ?

Hi,
I was thinking about improving milage and power in my Azzy with out any mods of the engine (warranty issues and I'm not a car mechanic).
I heard about aitr filter replacement K&N. Is it any good?\
Doe it really improve fuel consumption ir is it just a commercial trick?
I found this one:
2007 HYUNDAI Azera 3.8L V6 F/I - All Automotive Air Filter 33-2346
http://www.knfilters.com/search/product.aspx?Prod=33-2346

If it really works - how difficult is to replace air filter?
Rob.

It's not hard. Takes maybe 15 minutes or so to take the connections loose and pop the box and get the old filter out and get the new one in and back together. I put one of the K&N filters in and haven't noticed any real improvement. Thought it might help as we are only getting 24.5 or so mostly hwy driving, and was hoping to get it higher as most seem to do high 20's on the hwy.

its your thought. but some time its work and some time it fail.

I've changed my air filter twice and unfortunately have not seen a noticeable increase in highway MPG. I used to get about 28.5 MPG in the summer and 26.5 MPG in the winter, but at 60k miles, something happened (not sure what yet, other than a flat tire and changed it) and I now get 26.5 HWY in the summer and then about 25 in the winter. It is always good to check the filter and change accordingly though.

After seen out the post the only things that i can say is that you are playing with fire when its comes to MB MAN you won't notice any increase in the performance.

I got the K&N and no tone, or real performance increase, maybe 1hp, nothing I could notice. Since then I have a short ram intake and theres a world of difference with that, better mileage, better sound, more hp, more response. Also everyone will say that it makes your engine dirty and doesnt filter anything and so on, yet everytime my oil is changed it is inspected and it is as clean as ever.

In the day of carburetors, anything that increased air flow into the engine would increase gas mileage and HP. So, putting in a clean air filter would lead to an increase, and removing it altogether would give another increase.

This all changed when car engines started using variable fuel injection and fuel mixture was controlled by an on-board computer using oxygen sensors in the exhaust, and computer controlled engine timing. Now a dirty air filter will simply result in a less HP since less combustible mixture is being made available for any throttle setting. Mileage won't be all that affected.

There are limits, I suppose, but in general, magic add-on devices (which never had much, if any, effect) will only result in increased mileage associated with the weight loss of the money in your wallet.