Got me a 2019 Sr Maxima thinking putting in K&N anyone change theirs and is there a difference in the throttle response.

 

Some guys have done it and report the car sounds louder under the hood when getting on it. I don't think there is a significant performance gain. The stock air box is well engineered. The more I read about the 8th Gen cars the more I am realizing it's best to just leave them alone as far as any performance mods go.

 

Thanks I appreciate.

 

No.

 

A quality Y- pipe and axle back mufflers is worthy upgrade anything after that forget about it.

 

what he said^^^^^^^^^^

 

I used an AFE dry filter in my oem airbox. Does the job

The K&N is oiled and MAF sensors do not like oil.

AEM also makes a dry filter for the Maxima.

 

100% no.

 

No. Although I've had one on my 1995 Vette since new and have cleaned and re-oiled it a few times. Must be careful doing this. I am careful not to overdo the oil spray and my MAF is still clean after all these years. As for seat of the pants performance feel? Naw. Extra noise from the intake? Naw. Who wants to hear more "sucking sound" coming from their engine bay anyway?

 

Yes, I've been using the K&N direct-replacement panel filter since new. Best feature: you put it in and FORGET ABOUT IT! You can let 50,000 miles pass without looking at it.(but clean the leaves out) Performance: over time, the K&N is less affected by dust buildup than the paper filters, so they will surpass the performance of the paper filter over time since they don't get irreversibly clogged. Butt dyno: at low revs, no difference; at higher revs, yes you can feel it (but it's not life-changing). I'm also a Mechanical Engineer with 75K miles on my '16 SV.

 

Another plus to the K & N, it will let more dirt into your engine if that is what you are after. Also, back in 02 when the Altima got the VQ, a lot of us installed K & Ns. A significant portion of us had MAF failures from the Oil. They were very sensitive

 

Know what you're talking about before commenting. Read below/it's well-documented by engineers (like myself) that you don't know what you're talking about and are perpetuating a myth from 20 years ago that should no longer exist.

https://www.knfilters.com/maf/massairfindings.htm

 

I know what I am talking about..especially in reference to the car that I mentioned. It happened often, and with the K & N. I had one, it did not happen to mine............But I can tell you there was absolutely no difference what-so-ever with the 50 dollar filter.

 

Unless you can post test results from K&N showing you submitted your failed MAF sensor to them for test (and it failed their test), your anecdotes mean nothing. We'll need substantial evidence if you're going to stick with your story. Your move.

 

You can find anything you want to find...I don't give 2 @#$#s. If you want to waste your money, go ahead. I am just telling you what I saw with the 3.5 Altima in 2002. Hey I wasted my money.

 

You do realize that your findings are directly from K&N themselves? That's not biased or anything. If the results were from an independent 3rd party, I'd be more willing to accept it. I find it interesting that K&N is bold enough to state that there is no evidence of oil leaving the filter and getting sucked onto the MAF, even under extreme CFM's. From real world experience from many members of the Org and from other members on other car forums that I frequent, there have been numerous examples of users finding K&N oil on their MAFs.

FWIW, my father in law changed out his OEM filter for a K&N. About 2 to 3 months later, his vehicle started acting up (loss of power, erratic idle, surging). I determined it was the MAF. Upon inspection, I could see a thin film of oil on the MAF screen and the hot wire. I cleaned it with MAF cleaner. Although the vehicle behaved better, it didn't solve the problem. A new MAF solved the problem.

 

If you read your own last paragraph, you'll realize you have no proof that it was the oil that caused the sensor to fail. They do fail on their own, you realize. I've been using k&n for 21 yrs.

 

I had an '07 Altima 3.5SE with 170,000 miles and used a k&n panel filter since new; so, again, you have no proof of anything here except maybe a coincidence.

 

As stated earlier, I am not a huge fan of K&N filters even though I have owned one on the same hi-po sports car for 24 years now! I did some looking around the net for unbiased tests on auto filters including paper, K&N, and NO filter and ran across this one. Very interesting, especially the HP test using NO filter. PS- I am an aeronautical engineer so I know something about air movement, but I am severely lacking in filtration knowledge. Just had to get that one in there :-)

 

 

oh come on...don't stop now, K&N SUCKS come one they leave oil on your MAF....

 

For your reading pleasure: Keep K&N or Not

https://www.bobistheoilguy.com/forum...ot#Post4932835

 

so they do SUCK DUN DUN DUN!! problem solved

 

 

 

https://axleaddict.com/cars/Are-perf...t-do-they-work

I found another article on air filter improvements from another Gearhead. This one sounds pretty legit and experienced.

 

 

This may be old 2 many of you but to some of us, and especially the initial writer It's a way of learning. If it's boring to you then don't read it and it will disappear of its own boringness after a while :-)

 

This may be old 2 many of you but to some of us, and especially the initial writer It's a way of learning. If it's boring to you then don't read it and it will disappear of its own boringness after a while :-)