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Discussion Starter · #1 ·
Just wanted to get it out there. I know everyone and their grandma thinks K&N filters are awesome and that you should get one too. But it’s just not true. They do an absolutely terrible job of filtering 😒 and they aren’t even close to the best flowing. I don’t know how they grew their brand to what is today with such an inferior product. If you don’t believe me, which I’m sure 90% of people won’t, look it up for yourself. Find independent tests and results, because K&N won’t do the tests(guess why). That is all. Peace.

Oh one more thing. WIX
 

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Just wanted to get it out there. I know everyone and their grandma thinks K&N filters are awesome and that you should get one too. But it’s just not true. They do an absolutely terrible job of filtering 😒 and they aren’t even close to the best flowing. I don’t know how they grew their brand to what is today with such an inferior product. If you don’t believe me, which I’m sure 90% of people won’t, look it up for yourself. Find independent tests and results, because K&N won’t do the tests(guess why). That is all. Peace.

Oh one more thing. WIX
Well....not a fan , but, if you're going to throw that out there, you should at least post a link to your source.
 
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My data is too slow to load pages on yt right now. And no WiFi at new house. Luckily I can still load the forum😋. One good source for this info is the testing that project farm did. This guy does it right. For those who want to check it out, go on YouTube and look up project farm. You can find the vid he did on air filters. You will also finds loads and loads of other product testing. I know I know. “Oh some guy on YouTube” seriously, check it out. If you care about protecting your engine.
Here’s another one


Seriously, just look it up. The info is out there. And easy to find. If you want to find it.
 

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I mean, I've had one on my truck for well over 100k miles, and am getting closer to 300k without much issue. Their heat shield weatherstrip and mounting hardware is not the best.
 
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K&N is literally advertised as a high-flow filter so if you are expecting a high-flow filter to actually filter better I think that is where you are going wrong.

I personally am using a Supertech 1600 which is advertised for 3 years or 30,000 miles and "Max Airflow" "High Air flow rates" I wouldn't expect it to compete with something like a STP SA7421 which advertises "High efficiency" "Maximum dirt holding capacity"

I certainly wouldn't pay the extra price for a K&N when my truck is stock.
 

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Discussion Starter · #8 ·
I mean, I've had one on my truck for well over 100k miles, and am getting closer to 300k without much issue. Their heat shield weatherstrip and mounting hardware is not the best.
I have no doubt. But for my money, I want protection, not looks, or whatever status comes with running one of their filters. I’m not saying that that is why you do. But I think most people do because they believe their vehicle will be faster and because they think it will impress people that they run K&N.
 

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have over 300,000 miles on my 03 Sonoma that I use for work with the K&N cold air intake. And on my other '03 Sonoma I have about 75,000 miles with a K&N cold air intake and neither one of them have issues. I live in a farming community lots of dust everywhere and driving through it 5 to 6 days a week all summer. And I clean my filters once a month during spring summer and beginning of fall. So if there was going to be issues I think I would have seen something by now. And I just put a K&N cold air intake on my 04 Blazer for now until I do The 5.3 swap. And when I do the swap I still will be running a K&N filter. And by the way I'm in California which is now on fire again so I'm driving through tons of particulate matter / Ash and I'm still not having any issues.
 

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I have no doubt. But for my money, I want protection, not looks, or whatever status comes with running one of their filters. I’m not saying that that is why you do. But I think most people do because they believe their vehicle will be faster and because they think it will impress people that they run K&N.
I didn't buy my K&N for looks or the so-called horsepower gain but to me it helps the 4.3 breathe better over the stock air box. And since I added the K&N with 3 in exhaust I increase my gas mileage about 30 to 40 miles more per tank over the stock airbox and exhaust. With the stock air box and stock exhaust I was getting about 200 to 225 miles to a tank with the K&N and 3-in exhaust after the catalytic I'm getting about 265 to 280 miles per tank depending on how heavy my foot is that day.
 

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my two cents worth- between myself, my father(45 yrs for GM before "retiring " to build 1/4 mile monsters and my uncle(circle track nut)- we have tried K&N and found not much improvement over quality paper- and worse performance when in a dusty/dirty enviro(off pavement). But as @Rhotpursuit mentioned, most end users do not follow the instructions and end up with a oily mess.
 
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Discussion Starter · #13 ·
I didn't buy my K&N for looks or the so-called horsepower gain but to me it helps the 4.3 breathe better over the stock air box. And since I added the K&N with 3 in exhaust I increase my gas mileage about 30 to 40 miles more per tank over the stock airbox and exhaust. With the stock air box and stock exhaust I was getting about 200 to 225 miles to a tank with the K&N and 3-in exhaust after the catalytic I'm getting about 265 to 280 miles per tank depending on how heavy my foot is that day.
Hey that’s great. The more Mpgs the better. Also, remember guys, I never said it’s gonna destroy your engine. I just want people to know that the filter that claims to be the best actually sucks at it’s job. Trust me I knew this post would ruffle some feathers. I’m not an idiot. But I also know we are all car guys, and many of us are mechanics. Which means we like to learn about cars and engines and everything that comes along with that. So even tho I know most of us are going to be highly opinionated, I still wanted to get the info out there.
 

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Discussion Starter · #14 ·
my two cents worth- between myself, my father(45 yrs for GM before "retiring " to build 1/4 mile monsters and my uncle(circle track nut)- we have tried K&N and found not much improvement over quality paper- and worse performance when in a dusty/dirty enviro(off pavement). But as @Rhotpursuit mentioned, most end users do not follow the instructions and end up with a oily mess.
I believe it. There aren’t many people who really do everything they are supposed to do with stock vehicles, much less the added requirements once you start modding stuff and playing with aftermarket. Thanks for sharing your experience👍
 

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Discussion Starter · #15 · (Edited)
Next youre going to post about flowmasters not being that good either..
Haha that’s funny. Nope. I love the sound of flow master. Also, I wasn’t posting about K&N just to go against the grain. I posted it because like 90% of people here say they have one or list it as a “mod” or have it on their list of future plans. Of course if more people knew that it wasn’t really doing anything but letting in more dirt, they probably wouldn’t go spend 10 times as much on it as a high quality filter.
 

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Been using them for 30yrs. I like them because they last longer, work better dirty and are reusable. Think I'll keep doing it. Anybody who thinks a simple air filter swap is going to yield a noticeable gain is delusional.
 

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Come on out and fight some fires. We have one that started today in what might as well be the middle of town. Evacuation orders are pending since it jumped the road. I took the Queen in to have the PPF inspected but they were getting ready to close because the power was out because of the fire....well..actually a falling tree hit power lines and sparked the fire.
 
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