K&N air filter

[agz]

Am planning on getting a g37 coupe journey in next month or so. Any comments on if a K&N air filter adds power and fuel economy? Also does the black show nicks and scratches more than other colors. thanks agz

[Oneoftheboys06]

well for the K&N air filter I dont know, but a black car does show nicks and scratches more then other colors but if you take care of the car you shouldnt have any problems, a black car you have to wash it at least once every 1 or 2 and wax it more often then other colors to keep it looking new

[FORMYWIFE]

Am planning on getting a g37 coupe journey in next month or so. Any comments on if a K&N air filter adds power and fuel economy? Also does the black show nicks and scratches more than other colors. thanks agz

Not sure about the K&N....But if you're getting black. Go ahead and buy a lambswool wash mit, slow speed orbital buffer, a slew of microfiber bonnets, Meguiars NXT wax, Meguiars Ultimate Detailer spray, and a ton of microfiber towels. And be ready to wash frequently, and use only the softest towels to wipe her down. Tell your ignorant buddies to NOT lean on her, and don't let anybody touch her when she's dirty.....and dry the car with an "ABSORBER" brand synthetic chamois, NOT a friggin bath towel.....Chase

[Steve2112]

I hear the oil on the K&N causes MAF sensor errors

[G_whizz]

Welcome to NICO!!



For modding ideas go here zerothread/207927

there is also a great write up on air filters (yes it is in the G35 forum but 95% of the mods are the same) you may want to check out the Fujita dual intake... talked about in this thread zerothread/293494

It seems to be becoming more and more popular with Members.

As for having black... you may SERIOUSLY want to look into getting a clear bra from 3M. It is practically un-noticeable and can save you a great deal of heartache. A very wise investment IMHO

For washing a black car (which you will do every 2 days ) do it in the shade, wash in sections starting from the roof, always wash and dry in on direction (or you will get swirl marks) buy a great chamois (don't cheap out) There are also detailing threads and advice here on NICO

The search button is your friend!



Welcome to the club!

[Q45tech]

If K&N actually have less resistance to flow, it can be infered that they filter less effectively than oem filters. This is really only important to after warranty performance [ringwear primarily].

Depends on how nice you want to be to 2nd and 3rd owners and whether you believe in karma or not.

The oem filter is the least resistrictive component in the entire intake tract less than 1/10th of the MAF or throttle body and 1/20th that of the intake valves, so not much gain -------much much less than 1/2% improvement!

[smark]

The oem filter is the least resistrictive component in the entire intake tract less than 1/10th of the MAF or throttle body and 1/20th that of the intake valves, so not much gain -------much much less than 1/2% improvement!

I've wondered about such improvements. If you're correct, then they're miniscule. I often wondered why there is such infatuation with these air filters. I think it's mostly a result of clever marketing.

[G_whizz]

Not really, I personally love the sound it ads.. but yes the gains are minimal. It's not like you are adding F1... I think it's worth it IMHO

[G37 Man]

My dealers service ad-visor said the same thing.I would assume that sprayingless protective oil on the filter would prevent that,as to the question why people buy K&N filters.One time cost rather than changing the standard filters every 10,000-15,000 miles x2 with the G37.

[G_whizz]

The sound alone is worth it to me..

As long as you NEVER overspray/drench the filter... your not going to have problems...

Again, the gains are minimal.. I've had this mod on my last 3 cars... loooove the sound

[G37 Man]

http://www.knfilters.com/MAF/MAFTestresults.htm

Talked to K&N and it was suggested I get on this site to explain the issue that dealers are throwing out regarding MAF sensors and the impact that K&N type filters present.

I hope this helps answer some potential Warranty questions.

[G_whizz]

WOW!!

Good info and thanks for sharing the link! +1 for you!

Shame on the stealerships who attempt to get out of a warranty fix by blaming it on a mod. Awesome that in the end they get burnt by K&N who did significant testing to prove them wrong!!

[dmkozak]

Shame on the stealerships who attempt to get out of a warranty fix by blaming it on a mod. Awesome that in the end they get burnt by K&N who did significant testing to prove them wrong!!

Except, there are other studies, by outside third parties, that come up conclusions different than K&N's inhouse studies. I can't remember off the top of my head, the site, but there's the "oil guy" site that deals with oil and oil filters. He also did some independent air filter studies which show K&N flows less air.

[djkymar]

So still whats better for sound and adding horses? to put 2 drop in K&N filters or get stillen cold air intakes with 2 cone K&N filters? I mean teh price difference is 400 bucks cuz drop in filter 110 for two and stillen is 500 for their system.

[G37 Man]

cost of 2 K&N Filters $80 total.running with them now and looking to see if it impacts MAF sensors.

[Whitby37S]

Like some people commented above, I *LOVE* the extra sound a CAI adds to a car, but the OEM dual air intakes that come with the G37 look tricked out as is.

To that end, I have a question: to those of you who simply added the drop in K&N to the stock intakes, did it increase sound much?

please say yes!!

Let me know, my purchase depends on it. heh heh.

[G_whizz]

Like some people commented above, I *LOVE* the extra sound a CAI adds to a car, but the OEM dual air intakes that come with the G37 look tricked out as is.

I couldn't agree more..

[Meltdownblitz]

So then, the K&N air filters do give more sound and acceleration?

[Meltdownblitz]

cost of 2 K&N Filters $80 total.running with them now and looking to see if it impacts MAF sensors.

How do you like them??

[G37 Man]

How do you like them??

No problem,can I till the difference between the sounds of stock filters and K&Nmaybe a little louder with K&N.I only have 2,900 miles on my car and have had the K&N since around 500.The engine is breaking in as are the filters,I see a little better gas mileage,which I am sure is coming as a result of the break in.

Now if you ask me if it feels faster,all I can say is WOW,the car is fast all the timebut I have had to reduce my speed because of a ticket

[cloudpoop]

No problem,can I till the difference between the sounds of stock filters and K&Nmaybe a little louder with K&N.I only have 2,900 miles on my car and have had the K&N since around 500.The engine is breaking in as are the filters,I see a little better gas mileage,which I am sure is coming as a result of the break in.

Now if you ask me if it feels faster,all I can say is WOW,the car is fast all the timebut I have had to reduce my speed because of a ticket

SO does the k&n drop in air filter produce a deeper sound on acceleration? Because i live in Toronto, canada and the k&n filter is not avaliable in Toronto yet and I will have to order from US. So I am wondering if its worth it to order it in, I was quoted $142 cdn plus 13% tax...

[cloudpoop]

Does k&N drop in filter give better sound during accelration?

[G37 Man]

I would say a little,if you are expecting a very deep sound the answer is NO.I notice as the car warms up the sound is not as noticeable as from the time you start it when cold.jmo

But lets remember it is a one time purchase rather than replacing your dual filters every 10,000=15,000 miles.

Who are you buying the filters from in the US?

[maxnix]

I hear the oil on the K&N causes MAF sensor errors

Bingo! Not what you want. OEM from Joe changed annually are what you want. Same for aftermarket CAI - you're just spending money for no gain.

If a louder intake thrills you, you need to get a life or at least RTFSM.
Modified by maxnix at 5:01 PM 4/27/2008

[Meltdownblitz]

Do the K&N air filters cause the check engine light or any other things to go wrong?

[G37 Man]

Do the K&N air filters cause the check engine light or any other things to go wrong?

NO problem after 3,000 miles of use.

[maxnix]

NO problem after 3,000 miles of use.

Allowing lrager grit and caoting MAF hotwire with oil takes a little longer.

If you are just a renter or short term owner that sells before warranty is out, should not be a problem. You won't notice the gradual decline in performance.