Air filter question
Thread Starter
Premium Supporting Vendor
Joined: Mar 2010
Posts: 131
Likes: 2
From: West Jefferson North CArolina
Air filter question
I'm thinking about buying a K & N filter for my '04 auto. Driving mostly highway miles what kind of a gas mileage increase can I expect?
Thanks.
Thanks.
Tech Contributor
Joined: Jan 2007
Posts: 19,243
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From: Dyer, IN
Safety Car
Joined: Oct 2003
Posts: 3,699
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From: Sun City- Menifee Calif.
Melting Slicks
Joined: Sep 2005
Posts: 2,568
Likes: 264
From: Near Charlotte NC
I run K&N in all my cars and have for many years.Maybe a slight increase,but more air is a good thing,PLUS you never have to buy another air filter again.
I'm still running the first one I bought for my 96 Eclipse GST....16 years later & 145K miles is a good return for a $45 filter.
\db2
carolina
I'm still running the first one I bought for my 96 Eclipse GST....16 years later & 145K miles is a good return for a $45 filter.
\db2
carolina
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Pro
Joined: Mar 2010
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From: LA/OC border, probably sittin' under the patio, by the pool...smokin' a cigar! SoCal
Wait till "pay it forward" starts, hopefully in the next week or so. I have one that I'm going to offer up. Just cleaned and oiled, but decided to go a different route.
Melting Slicks
Joined: Aug 2004
Posts: 3,003
Likes: 89
From: Indy IN
The ONLY time a reduced resistance air filter can make any difference is at wide open throttle. Whenever you are at less than 100% throttle you are setting the mainfold pressure with your foot. It doesn't matter if the filter restriction is less, because you are creating more restriction with the throttle plate. If you were to have a more restrictive filter you would open the throttle plate more but the manifold pressure is still the same.
Bottom line is that air filters in spark ignition engines don't effect fuel economy. With a diesel, since there isn't a throttle plate, restriction does effect fuel economy since it effects pumping losses.
Bottom line is that air filters in spark ignition engines don't effect fuel economy. With a diesel, since there isn't a throttle plate, restriction does effect fuel economy since it effects pumping losses.
Drifting
Joined: Jul 2006
Posts: 1,482
Likes: 253
From: Lake Tapps WA.
AC Delco is $20
Wix is $15
K&N is $60
Changed at least once a year depending on driving miles and conditions....
Looks to me that it would pay for itself pretty damn quick. After that it's all savings and probably better filtering as a bonus.
Last edited by C5FORFUN2; Nov 19, 2011 at 11:34 PM.
Safety Car
Joined: Oct 2003
Posts: 3,699
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From: Sun City- Menifee Calif.
Burning Brakes
Joined: Mar 2010
Posts: 1,189
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From: Freeport, FL
When I installed a Blackwing filter, I removed my "Green" filter, and now it is cleaned, oiled, and ready to install, but has no home. Let me know if you'd be interested in buying it (only has about 3k miles). Look up Green filters, they are supposed to be better than K&N. I like K&N, and can see that they are very similar, but the Green filter looks to be made a little "cleaner" (for lack of a better word).
Le Mans Master
Joined: Nov 2005
Posts: 6,993
Likes: 25
Where's the cleaning/oiling kit #'s? And the PIA it is to clean and re-oil
Burning Brakes
Joined: May 2007
Posts: 911
Likes: 27
From: Southern IL
When I installed a Blackwing filter, I removed my "Green" filter, and now it is cleaned, oiled, and ready to install, but has no home. Let me know if you'd be interested in buying it (only has about 3k miles). Look up Green filters, they are supposed to be better than K&N. I like K&N, and can see that they are very similar, but the Green filter looks to be made a little "cleaner" (for lack of a better word).
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
Don't know where you guys have been, but oiled cloth filters filter MUCH worse than paper filters. They contribute to engine wear! Plus too much oil can affect the MAF sensor.
I would never consider one on any of my cars.
I would never consider one on any of my cars.
Drifting
Joined: Jul 2006
Posts: 1,482
Likes: 253
From: Lake Tapps WA.
