K&N Air Filter

[treillw]

I live on a very dusty road and do a lot of dirt road driving. I had somebody tell me that a K&N Air filter is bad news for this environment and that it lets to many dirt particles through. Thoughts on this?

Best filter to use?

Thanks!

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[Megawatt]

I live in a dusty area also. This is one off road trip dust results photo. I went back to stock filters. I have used K&N many times in past. I could see the dust in throttle body after the K&N filter so it’s definitely getting thru to the engine.

K&N is great for more hp because of better airflow but the cost is dirty air can
get thru. Toys and racing applications get K&N. My street vehicles get stock air filters for me.

Before run

After

 

[Old Dogger]

Stay with the factory installed engine air induction system. This is designed to help keep your engines air induction clean. Silicon (dirt) entering you engine, will cause major problems!!!!!!!

 

[Heimkehr]

Blackstone Labs has, on their analysis reports, commented that effective air filtration (via the OEM air filter element and intake plumbing) contributes positively to the observed condition of the used oil samples, and by extension, the health of the Jeep's engine.

I used K&N air filters for some years, years ago. Without exception, they provided an instant and sustained 1-2 MPG increase in fuel mileage. That said, my evolving knowledge on the subject of air filtration, enhanced by analyses that became available online, compelled me to return to factory air filters.

 

[Johnny B]

While running a stock intake on my Ram, I used a pair of K&N filters that would get treated prior to reinstall. Problem was, the throttle body was always cruddy. When I upgraded the intake and throttle body, I went back to paper filters. Last time I had the top end of the hemi apart, throttle body was seriously cleaner with the paper filter. Now, I swear by paper filters, and regular maintenance on them as well.

 

[YBABRAT]

I am sure you all are talking about the oil type. I like the K&N synthetic type. Though they are a little more restrictive than the oil version.

 

[YBABRAT]

I live in a dusty area also. This is one off road trip dust results photo. I went back to stock filters. I have used K&N many times in past. I could see the dust in throttle body after the K&N filter so it’s definitely getting thru to the engine.

K&N is great for more hp because of better airflow but the cost is dirty air can
get thru. Toys and racing applications get K&N. My street vehicles get stock air filters for me.

Before run

After

IMO you need a tractor air cleaner not stock for that type of off roading.

 

[Old Dogger]

IMO you need a tractor air cleaner not stock for that type of off roading.

Yep the below filtration link: Two stage, three stage and some mining haulage trucks every have four stage filtration.
https://www.donaldson.com/content/d...0027-ENG/Air-Intake-Systems-Product-Guide.pdf

 

[Heimkehr]

Yep the below filtration link: Two stage, three stage and some mining haulage trucks every have four stage filtration.
https://www.donaldson.com/content/d...0027-ENG/Air-Intake-Systems-Product-Guide.pdf

Heck, I made sure to select a zero-turn mower that had an uprated air filter assembly. The pre-filter in particular has made its worth very evident.

 

[q2bruiser2]

Blackstone Labs has, on their analysis reports, commented that effective air filtration (via the OEM air filter element and intake plumbing) contributes positively to the observed condition of the used oil samples, and by extension, the health of the Jeep's engine.

I used K&N air filters for some years, years ago. Without exception, they provided an instant and sustained 1-2 MPG increase in fuel mileage. That said, my evolving knowledge on the subject of air filtration, enhanced by analyses that became available online, compelled me to return to factory air filters.

I have never understood why more airflow is somehow equated to better MPG. If there is more airflow through the intake system, that means the ECU would have to increase fuel in order to prevent a lean mixture which would result in less MPG. Potentially more HP yes, but less MPG due to fuel increase to combat lean mixture.

 

[g2020]

I live on a very dusty road and do a lot of dirt road driving. I had somebody tell me that a K&N Air filter is bad news for this environment and that it lets to many dirt particles through. Thoughts on this?

Best filter to use?

Thanks!

I was a K&N user for many years, but switched to FRAM earlier this year. The K&N and (for DIY) MOPAR warranties do not cover damage to other parts.

I use the FRAM ULTRA AIR Premium Air Filter.

 

[Jeffy56]

I have never understood why more airflow is somehow equated to better MPG.

Back in the carburated days....

Stick with a good brand paper filter. K&Ns let in too many particularites.
Don't bother with a "cold air" either. Wishful thinking.

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