High Flow Air Filters
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High Flow Air Filters
Hi, this is my first post to this forum. It's nice to find so many Ford Truck enthusiasts!
Perhaps someone knows about this:
I just purchased a 2005 F-150 Lariat, and was going to replace the airfilter with a K&N airfilter. My brother-in-law had heard of the increased airflow actually harming the mass air sensor by introducing more particulates in the airflow, and gunking it up. He had also heard of poorer cold startups with high flow air filters (and this means a great deal to me living in Buffalo, NY).
Has anyone placed a high flow air filter in their truck and experienced these issues? Or conversely has anyone used a high flow and found it beneficial?
Thanks in advance.
-- Mike
Perhaps someone knows about this:
I just purchased a 2005 F-150 Lariat, and was going to replace the airfilter with a K&N airfilter. My brother-in-law had heard of the increased airflow actually harming the mass air sensor by introducing more particulates in the airflow, and gunking it up. He had also heard of poorer cold startups with high flow air filters (and this means a great deal to me living in Buffalo, NY).
Has anyone placed a high flow air filter in their truck and experienced these issues? Or conversely has anyone used a high flow and found it beneficial?
Thanks in advance.
-- Mike
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From: Rose Hill, Ks
I have had 2 cars with K& N's in them, I bought both of them that way so i dont really know before vs after. I know my suburban had above average gas mileage and it was lifted with some 33's on it. I k=live in ks. and we have -0 night here. I never had any trouble with either one starting. The k& n's are a little more work, i think you have to clean them mre often because of the oil you spray on them but I think they are superior. I am somewhat of a mechanic. not professional but I rebuld wrecks and have done engine rebuildsa also. I would have no problem putting one on my 02 ford psd. I am just going to buy other things first
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From: South Carolina
I was going to use a K&N in my Trans Am. Then I saw test results from various air filters. K&N flows the most, but let the most dirt pass through it. It finished last or next to last in every test that was done, but flow. Acutally the AC Delco filter they used performed great. Surprised the heck out of me. The tests were done by an independent lab, I can't find the article, wish I could to back up my claims here. Anyone else see the tests? Just my .02
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Here is the link to the reference described above, although the test was on a filter for a diesel truck.
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
You can also search AC Delco vs K&N on google and you will fine the article
http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm
You can also search AC Delco vs K&N on google and you will fine the article
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Some of the information your brother-in-law obtained is incorrect.
I have never heard of an air filter causing a MAF to gunk up, or cause cold starting issues.There have been a few issues of them causing certin '04 model 3-valve motors to throw a lean code, which in reality was a false alarm.
It seems that there is a 15% or so margin for error programmed into some of the PCM's used in the early '04 models that will actually cause the check engine light to illuminate without there actually being a lean condition.There are several ways to deal with this issue without causing any damage.
If you stick around here you will probably get 10-15 different replies on different CIA ( cold air intakes) . Personally I am using the Air Force 1 on both of my F-150's because of its power gains and workmanship.
Others have Airraid or Volant and are equally happy.
The final decision will be up to you...Good luck.
I have never heard of an air filter causing a MAF to gunk up, or cause cold starting issues.There have been a few issues of them causing certin '04 model 3-valve motors to throw a lean code, which in reality was a false alarm.
It seems that there is a 15% or so margin for error programmed into some of the PCM's used in the early '04 models that will actually cause the check engine light to illuminate without there actually being a lean condition.There are several ways to deal with this issue without causing any damage.
If you stick around here you will probably get 10-15 different replies on different CIA ( cold air intakes) . Personally I am using the Air Force 1 on both of my F-150's because of its power gains and workmanship.
Others have Airraid or Volant and are equally happy.
The final decision will be up to you...Good luck.
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From: Minnesota
My experience has been with the drop - in K&N Filters. I have had them in several different vehicles - cars and trucks. Performance wise throttle response was much better in every vehicle I have put them in. As far as filtering, my experience has been very good. The intakes have been very clean. Even tried to wipe inside with white cloth to test and no dirt!!! Then again, I live in Minnesota and drive mostly on paved roads. And half the year we have snow around here and everything is frozen. 
I could have a totally different opinion if I drove in dustier conditions. Who knows! But I will continue to use K&N. Just my thoughts.
I could have a totally different opinion if I drove in dustier conditions. Who knows! But I will continue to use K&N. Just my thoughts.
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I have used K&N filters in the past but won't with our new F-150. Just let's too much dust in. I have read tests where they put a secondary fine filter after the K&N to see how much gets by...amazing amount! Al
I have also read the claims of power increase/mpg increase with these low flow air kits. The only people that say they do anything good are the people who sell them and the wishful owners that buy them. Save your $200 on these kits and just change your normal air filter twice as often and you will achieve at least the same results.
I have also read the claims of power increase/mpg increase with these low flow air kits. The only people that say they do anything good are the people who sell them and the wishful owners that buy them. Save your $200 on these kits and just change your normal air filter twice as often and you will achieve at least the same results.
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From: Dedham, MA
babock,
they do work. I had a K&N cold air setup on a volvo turbo with significantly improved throttle response throughout the entire RPM range. And it wasn't my imagination. They do perform better than stock air filter elements, no matter how clean they are or how often you change them. However, i've been disappointed with K&N lately, they don't seem to be updating their filter technology as fast as their competition is and the cleaning/oiling process is a pain in the u-know-what.
As Snake said, the final choice is up to you. These systems have varying costs, appearances, and installation considerations that some may find better than others. Good luck.
they do work. I had a K&N cold air setup on a volvo turbo with significantly improved throttle response throughout the entire RPM range. And it wasn't my imagination. They do perform better than stock air filter elements, no matter how clean they are or how often you change them. However, i've been disappointed with K&N lately, they don't seem to be updating their filter technology as fast as their competition is and the cleaning/oiling process is a pain in the u-know-what.
As Snake said, the final choice is up to you. These systems have varying costs, appearances, and installation considerations that some may find better than others. Good luck.
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