K&N Air Filter - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

montej23 · 11-04-2009, 04:22 PM

Has anyone had issues with the Airfilter from K&N? For some reason my stock airfilter when in allowed me to average 27mpg yet when i put this K&N Airfilter in i dropped to 21mpg.

My driving pattern has not changed.. my gas octaine has changed... does anyone have any ideas or have this issue? Id like to fix it besides replacing the airfilter to stock. It just doesnt seam right. Any IDEAS

tjd24 · 11-05-2009, 08:13 AM

I gained 2 mpg when I installed the K&N Air Filter back 3 months ago and now that I drive in "S" mode consistently I'm in the 23-24 mpg range for my 60 mile roundtrip daily commute (70% secondary roads, 30% highway). I did run 89 octane for a while but saw no benefit then switched back to 87 with no issues.

When was your last oil change ? Was it around the same time you changed to the K&N?

tradosaurus · 11-05-2009, 08:19 AM

Quote:

Originally Posted by montej23

Has anyone had issues with the Airfilter from K&N? For some reason my stock airfilter when in allowed me to average 27mpg yet when i put this K&N Airfilter in i dropped to 21mpg.

My driving pattern has not changed.. my gas octaine has changed... does anyone have any ideas or have this issue? Id like to fix it besides replacing the airfilter to stock. It just doesnt seam right. Any IDEAS

Before I put in my new K&N filter I carefully dried up as much of the oil as I could. I believe the stock K&N filter comes with too much oil and can affect the Mass air flow transmitter.

Xanthos · 11-05-2009, 09:49 AM

Quote:

Originally Posted by tradosaurus

Before I put in my new K&N filter I carefully dried up as much of the oil as I could. I believe the stock K&N filter comes with too much oil and can affect the Mass air flow transmitter.

This is a very good idea to do. Thats one of the reason why I only use oil-less filters...
- X

dlynds · 11-09-2009, 07:21 PM

I installed a Airaid intake and filter and noticed my mpgs got worse. What can you do to clean or remove the filter's oil that has already hit the mass sensor and fix the problem? The intake was a heafty investment for me and I want to get all it's benifits.
Thanks.

scrming · 11-09-2009, 07:45 PM

Quote:

Originally Posted by dlynds

I installed a Airaid intake and filter and noticed my mpgs got worse. What can you do to clean or remove the filter's oil that has already hit the mass sensor and fix the problem? The intake was a heafty investment for me and I want to get all it's benifits.
Thanks.

Check at the local auto parts store for some MAF sensor cleaning spray....

Pull your MAF sensor out and spray, following the directions on the can...

BackinBlackSS/RS · 11-09-2009, 07:47 PM

Quote:

Originally Posted by Xanthos

This is a very good idea to do. Thats one of the reason why I only use oil-less filters...
- X

I could not agree more.

dlynds · 11-09-2009, 07:53 PM

Thanks, I'll try it tomorrow!

montej23 · 11-10-2009, 11:23 AM

all good info i will do this as well and let you know what happens probably wont get a chance to do it for a couple days.

Airaid Filters · 11-10-2009, 02:47 PM

Quote:

Originally Posted by dlynds

I installed a Airaid intake and filter and noticed my mpgs got worse. What can you do to clean or remove the filter's oil that has already hit the mass sensor and fix the problem? The intake was a heafty investment for me and I want to get all it's benifits.
Thanks.

Hello dlynds,

There is no reason to clean the MAF sensor.

The Airaid Premium Filter is designed with 4 layers of cotton gauze and incorporates a 5th layer of Synthetic material on the inside that WILL NOT ALLOW ANY OIL TO PENETRATE THROUGH THE FILTER.

Do not listen to the dealer when they tell you there is filter "oil" on the MAF sensor, when using a Airaid Premium Filter. If the dealer insists, ask them to "TEST" the MAF sensor!

Gains or loses in MPG are all dependant on driving styles and driving conditions. A less restrictive air filter does not reduce MPG.

Thanks,
David

rauhaus camaro · 11-13-2009, 06:10 PM

You might try resetting your ECM to relearn your AFR. You can try pulling your #5 and #20 fuses before you turn in at night then reinstall them in the morning. The other option is to just let the engine relearn on its own. It does that when the mass air flow sensor climbs or adjusts to different altitudes, low desert to high mountains, etc.

PieNsky · 11-14-2009, 11:26 PM

Colder temps will affect your mpgs too.

5thGenCamaroChick · 11-15-2009, 12:30 AM

You might check your tire pressure. When the temps drop it causes the air in your tires to contract. Lower psi causes lower mpgs. You prolly already know this, just thought I'd mention it just in case you didn't. Btw, I have a 1lt with a k&n filter, no probs with the gas mileage.

mtcwby · 11-15-2009, 02:22 AM

Another thing that really effects gas mileage this time of year is that most
cities require that the gas be oxygenated from Oct. or Nov. to Apr or May.
So they put around 10 percent ethanol in the gas. Look at the pump and you'll probably see a sticker that the fuel is oxygenated. There is less energy
in a gallon of this fuel, so gas mileage drops accordingly. The price should drop also, but it never does. My mileage dropped about 3 mpg's on my SS
when they did this in the Denver area.
In the spring you'll see it go back up. Hope this helps you.

11-04-2009, 04:22 PM	#1
montej23 Drives: 2011 VR Camaro Join Date: Jun 2009 Location: Arkansas Posts: 974 View My Garage	K&N Air Filter Has anyone had issues with the Airfilter from K&N? For some reason my stock airfilter when in allowed me to average 27mpg yet when i put this K&N Airfilter in i dropped to 21mpg. My driving pattern has not changed.. my gas octaine has changed... does anyone have any ideas or have this issue? Id like to fix it besides replacing the airfilter to stock. It just doesnt seam right. Any IDEAS

11-15-2009, 12:30 AM	#13
5thGenCamaroChick Hey y'all :) Drives: Rosalee Join Date: Jul 2009 Location: Southeast TN Posts: 437	You might check your tire pressure. When the temps drop it causes the air in your tires to contract. Lower psi causes lower mpgs. You prolly already know this, just thought I'd mention it just in case you didn't. Btw, I have a 1lt with a k&n filter, no probs with the gas mileage. __________________ "Are you picking up what I'm laying down? Can you dig what I'm growing?"

11-15-2009, 02:22 AM	#14
mtcwby High on "The Camaro Life" Drives: 2010 2SS, IOM, LS3, Vortech, LG cam Join Date: May 2009 Location: Big Sandy, MT & Yuma, AZ Posts: 1,028 View My Garage	Another thing that really effects gas mileage this time of year is that most cities require that the gas be oxygenated from Oct. or Nov. to Apr or May. So they put around 10 percent ethanol in the gas. Look at the pump and you'll probably see a sticker that the fuel is oxygenated. There is less energy in a gallon of this fuel, so gas mileage drops accordingly. The price should drop also, but it never does. My mileage dropped about 3 mpg's on my SS when they did this in the Denver area. In the spring you'll see it go back up. Hope this helps you. __________________ "The democracy will cease to exist when you take away from those who are willing to work and give to those who are not."-Thomas Jefferson------Going Strong at 39,250 miles

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Supercharger / Turbocharger Results (INFO) Thread	radz28	Forced Induction - V8	273	08-15-2023 04:44 PM
g5cr cai system anybody install or looking at one "pics"	camarossrs2150	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	41	07-14-2011 08:26 PM
Hot air Intakes -By Kenne bell	ADM PERFORMANCE	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	66	02-08-2011 08:33 PM
List of Intakes that will work with the TVS-2300 MagnaCharger	JJ2010	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	26	03-19-2010 02:11 AM
Why RAM Air is a myth!!! Long Read (Wall of text)	live2well	Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons	80	11-02-2009 03:34 PM

11-05-2009, 08:13 AM	#2
tjd24 Thank you Oshawa/St.Cats! Drives: was 2010 2LT RS 2G1FC1EV4A9103434 Join Date: May 2009 Location: NW NJ Posts: 3,481 View My Garage	I gained 2 mpg when I installed the K&N Air Filter back 3 months ago and now that I drive in "S" mode consistently I'm in the 23-24 mpg range for my 60 mile roundtrip daily commute (70% secondary roads, 30% highway). I did run 89 octane for a while but saw no benefit then switched back to 87 with no issues. When was your last oil change ? Was it around the same time you changed to the K&N? __________________ #3434 Born 4-15-2009, Delivered 5-22-2009 BBOMG 2/3/4 - Traded-in 8/31/2019:

11-09-2009, 07:21 PM	#5
dlynds Drives: 2010 2LT RS inferno Orange Join Date: Aug 2009 Location: Saskatchewan, Canada Posts: 20	I installed a Airaid intake and filter and noticed my mpgs got worse. What can you do to clean or remove the filter's oil that has already hit the mass sensor and fix the problem? The intake was a heafty investment for me and I want to get all it's benifits. Thanks.

11-09-2009, 07:53 PM	#8
dlynds Drives: 2010 2LT RS inferno Orange Join Date: Aug 2009 Location: Saskatchewan, Canada Posts: 20	Thanks, I'll try it tomorrow!

11-10-2009, 11:23 AM	#9
montej23 Drives: 2011 VR Camaro Join Date: Jun 2009 Location: Arkansas Posts: 974 View My Garage	all good info i will do this as well and let you know what happens probably wont get a chance to do it for a couple days.

11-13-2009, 06:10 PM	#11
rauhaus camaro SoCal C5 Family Member Drives: 2010 Black Camaro 2SS with LS3 Join Date: Oct 2009 Location: Lake Forest, CA Posts: 57	You might try resetting your ECM to relearn your AFR. You can try pulling your #5 and #20 fuses before you turn in at night then reinstall them in the morning. The other option is to just let the engine relearn on its own. It does that when the mass air flow sensor climbs or adjusts to different altitudes, low desert to high mountains, etc.

11-14-2009, 11:26 PM	#12
PieNsky Drives: Victory Red 1LS Join Date: Nov 2008 Location: Louisville,KY Posts: 1,929 View My Garage	Colder temps will affect your mpgs too.