370Z K&N Dual Air Filter

Josh@STILLEN · 06-18-2009, 10:28 AM

Quote:

Originally Posted by Robert_Nash

With regards to aftermarket intake kits; unless you are doing some forced induction or something similar; the only thing an intake kit will do for you is look good and may give you some nice sound effects.

As far as engine performance goes; it's my understanding that the stock air box set setup provides all the airflow that the engine can handle.

While Nissan has definitely built a great platform, there are gains to be had from aftermarket products, including the intake system, our Gen 3 Intake having notable success in increasing horsepower, and making a noticeable improvement in acceleration along with transforming the sound from the intake, especially at high RPMs.

A quick search of the forums for dyno results on the Gen 3 Intake should give you some independent results from forum members here, some of whom have spent a small fortune for the good of the boards documenting their installs and resulting performance gains.

On the K&N side, we've been using these filters with our intake systems since the beginning, and sold countless panel filters, and have had exactly ZERO problems related to MAFs, oil, etc. K&N has been hit with a myriad of claims, most of which can be attributed to 'internet rumor', so much so that they set up a division and research arm within the company to attempt to combat these (largely unsubstantiated) internet claims.

Also keep in mind that normal cleaning procedures for panel filters is 50,000 miles, and conical filters used with air intakes is 50,000-100,000. We recommend 50,000 miles between cleanings. Even if gains are minimal on a panel filter, the convenience of not purchasing paper filters more than offsets the cost of the K&N, and in actuality, probably the Gen 3 Intakes if you consider the life of the vehicle.

ZKindaGuy · 06-18-2009, 09:45 PM

Quote:

Originally Posted by Josh@STILLEN

While Nissan has definitely built a great platform, there are gains to be had from aftermarket products, including the intake system, our Gen 3 Intake having notable success in increasing horsepower, and making a noticeable improvement in acceleration along with transforming the sound from the intake, especially at high RPMs.

A quick search of the forums for dyno results on the Gen 3 Intake should give you some independent results from forum members here, some of whom have spent a small fortune for the good of the boards documenting their installs and resulting performance gains.

On the K&N side, we've been using these filters with our intake systems since the beginning, and sold countless panel filters, and have had exactly ZERO problems related to MAFs, oil, etc. K&N has been hit with a myriad of claims, most of which can be attributed to 'internet rumor', so much so that they set up a division and research arm within the company to attempt to combat these (largely unsubstantiated) internet claims.

Also keep in mind that normal cleaning procedures for panel filters is 50,000 miles, and conical filters used with air intakes is 50,000-100,000. We recommend 50,000 miles between cleanings. Even if gains are minimal on a panel filter, the convenience of not purchasing paper filters more than offsets the cost of the K&N, and in actuality, probably the Gen 3 Intakes if you consider the life of the vehicle.

And please allow me to add to this that if by chance some oil does get on the MAF wire. Just buy a $3.00 can of either MAF cleaner at NAPA or a can of electronic circuit board cleaner and spray the wire IN-SITU and let it dry naturally by air thoroughly . It takes all of 10 minutes to "wash" the oil off and everything will be back to normal.

Philipp · 10-19-2009, 08:45 PM

Quote:

Originally Posted by Josh@STILLEN

While Nissan has definitely built a great platform, there are gains to be had from aftermarket products, including the intake system, our Gen 3 Intake having notable success in increasing horsepower, and making a noticeable improvement in acceleration along with transforming the sound from the intake, especially at high RPMs.

A quick search of the forums for dyno results on the Gen 3 Intake should give you some independent results from forum members here, some of whom have spent a small fortune for the good of the boards documenting their installs and resulting performance gains.

On the K&N side, we've been using these filters with our intake systems since the beginning, and sold countless panel filters, and have had exactly ZERO problems related to MAFs, oil, etc. K&N has been hit with a myriad of claims, most of which can be attributed to 'internet rumor', so much so that they set up a division and research arm within the company to attempt to combat these (largely unsubstantiated) internet claims.

Also keep in mind that normal cleaning procedures for panel filters is 50,000 miles, and conical filters used with air intakes is 50,000-100,000. We recommend 50,000 miles between cleanings. Even if gains are minimal on a panel filter, the convenience of not purchasing paper filters more than offsets the cost of the K&N, and in actuality, probably the Gen 3 Intakes if you consider the life of the vehicle.

Lots of interesting comments on that topic.

So I decided to test the K&N drop-in filters to the Dyno shop tonight and do a simple comparaison test versus the stock filters. I will upload the sheets as soon as my %?&*" (slow) internet connection is done downloading them...

All runs were done without any changes to the car (besides the drop-ins) and were taken less than 20 minutes aparts on a DynoPack about 2 hours ago.

We did 4 runs on stock and 4 runs with the K&Ns.

Philipp · 10-19-2009, 09:03 PM

Here they are on run #3 comparaison:

Philipp · 10-19-2009, 09:06 PM

ps. Can someone tell me how to insert the image instead of having attachments???

I will also send WHP sheets...

Philipp · 10-19-2009, 09:17 PM

Although the numbers do show a gain thrughout the RPM band, i couldn't feel any difference coming back home at WOT.
That being said, the engine "seems" to flow more fluently (especialy during downshifts).
Question for the techs folks: could the K&N oil affect the maf sensors and therefore changing the air/fuel ratio??? The filters were "out of the box"...

drisko · 04-21-2010, 11:35 PM

Quote:

Originally Posted by Philipp

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).

Awesome job on doing that test. 4 runs on each should leave no doubt that the filters do improve performance.

Just out of curiosity, how many miles or how dirty were the stock air filters used in this test? I assume you got the K&Ns brand new?

Philipp · 04-22-2010, 06:37 PM

Quote:

Originally Posted by drisko

Awesome job on doing that test. 4 runs on each should leave no doubt that the filters do improve performance.

Just out of curiosity, how many miles or how dirty were the stock air filters used in this test? I assume you got the K&Ns brand new?

Drisko,
Good question, the stock filters were actually in good shape (besides a couple of bugs....). And yes, the K&N's were out of the box brand new!
ps. After 9k they still run fine and no issues with MAF...

10-19-2009, 09:17 PM	#6 (permalink)
Philipp Base Member Join Date: May 2009 Location: Montreal Posts: 189 Drives: 370z SP MT Titanium Rep Power: 18	Human feedbacks... Although the numbers do show a gain thrughout the RPM band, i couldn't feel any difference coming back home at WOT. That being said, the engine "seems" to flow more fluently (especialy during downshifts). Question for the techs folks: could the K&N oil affect the maf sensors and therefore changing the air/fuel ratio??? The filters were "out of the box"... __________________ 2009 370z, MT & Sport package. DynoPack (stock): 268.8WHP & 224.4 Torque//K&N filters//Air cabin filter//HPS Tubes//Tune to come when VVEL...

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