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K & N filter a good thing

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kdxlive

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Discussion starter · #1 · (Edited)
just added a k&n filter to my patriot and i must say fule and performace is a lot better. Just want to send out my recomandations

K&N filter 2008 jeep patriot FDII Trail rated part #33-2362 about $48.00
never have to change again worth the money
 
#4 ·
I got one and am happy with it. The first thing I always did after buying a vehicle is installing the whole cold air kit. With the patriot I felt the expense of the full kit was not worth it this time and just went with the filter. It does improve performance enough that you notice it. As far as mpg's tough to say but it can't hurt mpg's.
 
#8 ·
kdxlive said:
sorry no pictures i didnt think it was nessasary it is just a air filter
Click to expand...
I thought it was the type where the filter is open to the air, not installed in the factory box.
 
#9 ·
an somebody explain why this air filter improves power and fuel mileage? Does it let pass air through easier? Does it mean that it does not filter air as good as the stock one? Is there more particles passing the filter and going in the engine? Why Jeep did not put it at the factory if its better?

That's a lot of questions :).
But I'm skeptical.
 
Discussion starter · #10 · (Edited)
fredlev said:
an somebody explain why this air filter improves power and fuel mileage? Does it let pass air through easier? Does it mean that it does not filter air as good as the stock one? Is there more particles passing the filter and going in the engine? Why Jeep did not put it at the factory if its better?

That's a lot of questions :).
But I'm skeptical.
Click to expand...
I hope i answer just one question :check the K&N web site for more information

High Air Flow with Excellent Filtration ,Designed to Increase Horsepower and Acceleration ,Washable and Reusable ,Will NOT Void Vehicle Warranty , Lasts up to 50,000 miles before cleaning is required depending on driving conditions. K&N Million Mile Limited Warranty® ,Emissions Legal in all 50 US States. Economical, a K&N Air Filter Will Last the Life of Your Automobile, Motorcycle, or ATV ,Works with Original Equipment Manufacturer Vehicle Electronics Easy High Performance Add-on , Environmentally Friendly

still doing a test to see if it actually improve gas mileage, i ran the stock air filter for 3 months calculating the proformance, now i have installed the K&N filter and i have 2 months to go. ill keep everyone posted, K&N filter brand is for every car not just the patriot, im not a dealer of this product just a user
 
#11 ·
fredlev: The high-flow filters are too expensive to put on at the factory. The stock ones are cheap and easy, and when running a stock filter they make more money because you end up replacing it a hundred times over the life of a vehicle, which relates to over a thousand bucks just for a cheap part. :p

But the reason K&Ns are good is because they're designed for performance and lifetime over cost of manufacture. They use a lot better material, and more support and such. Most of them are oiled filters, which means when you clean it you need to oil it again. They're beginning to develop some reliable 'dry' filters that are washable and reuseable. A good investment. Also, if you put in a K&N, and take off the intake piece over the battery housing, it'll sound nice when you step on it. ;)
 
#12 ·
Thank you for the explanation. I also looked at K&N web site and understand that the easier air flow will help the engine to breath. The other important thing is the filtering reliability to keep intake air clean.

Is it safe to remove the intake piece over the battery?
 
#14 ·
fredlev said:
an somebody explain why this air filter improves power and fuel mileage? Does it let pass air through easier? Does it mean that it does not filter air as good as the stock one? Is there more particles passing the filter and going in the engine? Why Jeep did not put it at the factory if its better?

That's a lot of questions :).
But I'm skeptical.
Click to expand...
Others have explained better than I could, butI would say.. Mopar does sell the high-performance filter... which is made by K&N. :)
 
#16 ·
I'm wondering how it improves gas mileage. The computer injects fuel according to how much air is coming into the engine. A dirty filter reduces the flow of air, but the system just compensates by squirting in less gas. It's not like the old days with carburetors when a dirty filter actually did waste gas.

Maybe it does give you a few more HPs though.
 
#17 ·
ray said:
I'm wondering how it improves gas mileage. The computer injects fuel according to how much air is coming into the engine. A dirty filter reduces the flow of air, but the system just compensates by squirting in less gas. It's not like the old days with carburetors when a dirty filter actually did waste gas.

Maybe it does give you a few more HPs though.
Click to expand...
I think I have an anology that might work but keep in mind I don't know squat about mechanics/calculations, etc.
Imagine 2 DUPLICATE Patriots at a stop sign. Only difference is one has a clean filter, the other a dirty one. They both need to accelerate to a given speed (say 55MPH). Upon starting, they both are able to push the pedal down to a point that will get them to 55 in a given length. BUT...the one with the dirty filter, as per your theory(which I believe is right), is getting less air AND less gas but that equals less power/speed. SO to compensate, the dirty filter Pat needs to press down harder on the pedal to get it to come up to speed with the clean filter Pat. He just used more gas to do that and there is where the MPG difference will occur.
Simplistic, I know, but hopefully that explains what I was trying to get across.
That's my theory and I'm stickin' to it.:D
 
#18 ·
K & N filters

More air, less restriction, less filtering. Bottom line, K & N filters would be hard on the engine. More air, more dirt etc, less filtration. Patriots are not high performance vehicles, But this filter will help the car wear out sooner that later. A poor modification if you want to run the engine a 100K miles.
 
#19 ·
A few years back, I put one in my Neon.
MPG went from 33-39 with the stock air filter to 36-45mpg with the K&N filter installed.
There is a price to pay, though.
Low speed throttle lags just a bit if left in too high a gear.(I use standard transmissions).
 
#20 ·
I finally got around to ordering the K&N air intake today. I'll have it early next week just in time for a nice long highway driving trip.

- Dan M
 
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