370Z K&N Dual Air Filter

Modshack · 10-19-2009, 10:25 PM

Quote:

Originally Posted by Philipp

Josh
Very interesting indeed. Thx for the info.

In addition to Josh's comments and the linked info, I've built over 1000 K&N based intake systems for Audi's and VW's over the years. Never a problem with MAF's (and the Audi type is much more sensitive than the Z style). Internet myths die hard... A problem can arise when the owner performs his first service and over-oils the filter. This is not common but it does happen when the instructions arent followed..

ZKindaGuy · 04-23-2010, 12:11 PM

Quote:

Originally Posted by Josh@STILLEN

K&N got hit with some bad internet stigma of "i know a guy, and his MAFs got messed up", and unfortunately that has plagued them.

They have an entire department set up to try and fail MAFs with oil, and have even gone so far as to have staff on hand to help with dealership issues if there is in fact a claim of the K&N's causing an issue..

.. none to date

K&N Consumer Protection Pledge

There's a ton of info here.. including testing

All that Guy had to do is go to Walmart and buy a $2.00 can of circuit board cleaner aerosol . THEN DISCONNECT THE BATTERY. Then spray the MAF sensor area. The oil comes right off because the spray contains carbon tetrachloride. Then let it all set for about a half hour. Reconnect battery and just start the car and let it idle for several minutes.

kenchan · 10-19-2009, 10:35 PM

I've used oiled cone filters (including foam type) on na, turbo, and supercharged cars and drop-ins for that matter on number of cars in the past with no issue.

MC · 10-19-2009, 10:36 PM

ive used the K&N(oiled) and currently the HKS( dry) filters in my car, no problem with either

Philipp · 10-19-2009, 11:18 PM

I did the same (using K&N) on my previous cars and had no issues. My goal was to confirm if there was any gains or loss over the OEM air filters. Here's the charts on torque numbers (runs #3 & #4).

ps. Did anyone else noticed the drop around 4250RPM and what is it the cause?

Portlander · 10-20-2009, 07:49 AM

Philipp, thanks for your efforts. Your dyno tests have made up my mind on the set up for my ordered Z. It's Stillen CBE and K&N drop in filters and nothing else. This combination should give me a 16-20 HP gain over stock with no warranty issues and that's the peace of mind I'm looking for!

Philipp · 10-20-2009, 11:26 AM

Quote:

Originally Posted by Portlander

Philipp, thanks for your efforts. Your dyno tests have made up my mind on the set up for my ordered Z. It's Stillen CBE and K&N drop in filters and nothing else. This combination should give me a 16-20 HP gain over stock with no warranty issues and that's the peace of mind I'm looking for!

My small contribution to the community! You will enjoy your new car. Mine is getting better every day

and has less than 4000km...

blinkme323 · 10-20-2009, 12:18 PM

So if I'm reading the charts correctly, we are looking at 4-5 hp gains in the peak range with the drop-ins?

Zsteve · 10-20-2009, 11:04 AM

sho nuf

j.arnaldo · 10-21-2009, 11:30 AM

My experience with the drop-in K&N is that I didn't notice any power increase--no loss, either, BTW!--but I'm now getting two weeks out of a tankful, versus 11-12 days I was getting prior to installing it. So, even if you don't get a whp increase with it, the gas savings are well worth it, dudes! Greetings from sunny/rainy Puerto Rico!
__________________________________________________ ______________________________
White Pearl '04.5 Touring Coupe 350Z: No feathering, no starting problem, no oil-consumption issue, flawless AT.

Pushing_Tin · 11-01-2009, 09:35 PM

What's the cheapest place to pick these up?

j.arnaldo · 11-02-2009, 08:56 AM

4-5 hp, or 3-5% gains? Please clarify. The literature that came with my K&N air filter used percentages to measure the gains. Allegedly, my '04.5 Touring Coupe gained 3%, which=8.61hp. Any experts in the house??

Rnmovr12 · 12-14-2009, 10:50 AM

if you live in a dusty area i would NOT recommend using the K&N filters. they let in alot of dust

370Zsteve · 12-14-2009, 10:50 AM

Quote:

Originally Posted by Rnmovr12

if you live in a dusty area i would NOT recommend using the K&N filters. they let in alot of dust

nonsense.

semtex · 12-14-2009, 10:52 AM

I've heard that too, actually. I don't know if it's true or not though. I also read somewhere that it's more a problem for FI applications than NA.

10-19-2009, 10:36 PM	#4 (permalink)
MC Moderator Join Date: Oct 2008 Location: NC Posts: 3,238 Drives: 2015 GTR NISMO Rep Power: 24	ive used the K&N(oiled) and currently the HKS( dry) filters in my car, no problem with either __________________ 2015 GT-R N1SMO "THE ONE" Instagram MCGTRN1SMO Youtube MCGTRNISMO

10-20-2009, 07:49 AM	#6 (permalink)
Portlander Base Member Join Date: Aug 2009 Location: Southern Maine Posts: 69 Drives: 10 370Z PW 6MT Sport Rep Power: 16	Philipp, thanks for your efforts. Your dyno tests have made up my mind on the set up for my ordered Z. It's Stillen CBE and K&N drop in filters and nothing else. This combination should give me a 16-20 HP gain over stock with no warranty issues and that's the peace of mind I'm looking for! __________________ Life is a highway!

10-20-2009, 11:04 AM	#9 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	sho nuf __________________ 2010 LS3 C6 Silver coupe corvette

10-21-2009, 11:30 AM	#10 (permalink)
j.arnaldo Banned Join Date: Oct 2009 Location: Puerto Rico Posts: 937 Drives: Nissan 350Z, 2004 Rep Power: 0	My experience with the drop-in K&N is that I didn't notice any power increase--no loss, either, BTW!--but I'm now getting two weeks out of a tankful, versus 11-12 days I was getting prior to installing it. So, even if you don't get a whp increase with it, the gas savings are well worth it, dudes! Greetings from sunny/rainy Puerto Rico! __________________________________________________ ______________________________ White Pearl '04.5 Touring Coupe 350Z: No feathering, no starting problem, no oil-consumption issue, flawless AT. Last edited by j.arnaldo; 10-21-2009 at 02:19 PM.

12-14-2009, 10:50 AM	#13 (permalink)
Rnmovr12 Base Member Join Date: Dec 2009 Location: Texas Posts: 59 Drives: 99 TJ Rep Power: 16	if you live in a dusty area i would NOT recommend using the K&N filters. they let in alot of dust __________________ my photography: http://www.flickr.com/photos/coltonstark/

10-19-2009, 10:35 PM	#3 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141522	I've used oiled cone filters (including foam type) on na, turbo, and supercharged cars and drop-ins for that matter on number of cars in the past with no issue.

10-20-2009, 12:18 PM	#8 (permalink)
blinkme323 Base Member Join Date: Apr 2009 Location: Philly Posts: 227 Drives: 09 370z Base w/Sport Rep Power: 17	So if I'm reading the charts correctly, we are looking at 4-5 hp gains in the peak range with the drop-ins?

11-01-2009, 09:35 PM	#11 (permalink)
Pushing_Tin A True Z Fanatic Join Date: Nov 2008 Location: Eugene, OR Posts: 2,875 Drives: E63 AMG Rep Power: 228	What's the cheapest place to pick these up?

11-02-2009, 08:56 AM	#12 (permalink)
j.arnaldo Banned Join Date: Oct 2009 Location: Puerto Rico Posts: 937 Drives: Nissan 350Z, 2004 Rep Power: 0	4-5 hp, or 3-5% gains? Please clarify. The literature that came with my K&N air filter used percentages to measure the gains. Allegedly, my '04.5 Touring Coupe gained 3%, which=8.61hp. Any experts in the house??

12-14-2009, 10:52 AM	#15 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 54 Posts: 5,995 Drives: People to drink Rep Power: 33	I've heard that too, actually. I don't know if it's true or not though. I also read somewhere that it's more a problem for FI applications than NA. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

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