Need some help, please. - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Bravo64 · 02-01-2015, 09:10 PM

I have a 2011 LS w/47,500m. Some things have been occurring since I installed a K&N cai system. First, I noticed the mpg declined a bit. I thought you were supposed to gain mpg. Secondly, I notice a lot of black soot accumulating on the inside of the chrome tail pipes. Also, the check engine light recently came on and according to autozone, it spit out code p0420. The check engine light has since disappeared. Question: is there a need to have it tuned after installing the cai? Any ideas? Looking for some assistance. Thank you

PhelanZL1 · 02-01-2015, 09:14 PM

to much oil on the filter, its getting on the mass airflow sensor, make the car run rich, and causes the cel to come on. Make sure there is not to much oli on the filter. Any car parts store sell mass air flow sensor cleaner, be careful the sensor is almost the size of a hair.

MLAZ1990 · 02-01-2015, 09:23 PM

Interesting...going to keep this in mind next time I clean my intake!

TommyTheCat · 02-01-2015, 11:22 PM

That MAF sensor shouldn't cause a P0420, which is a cat code for bank 1.

I would say can't cause it, but I'm hopeful you don't have to buy a catalytic converter so soon. Mostly just because I haven't taken mine off and I don't want to worry about them going bad at only 40,000

Homer2 · 02-01-2015, 11:32 PM

I "thought" the K&N CAI required a tune?

camguynj · 02-01-2015, 11:36 PM

Quote:

Originally Posted by TommyTheCat

That MAF sensor shouldn't cause a P0420, which is a cat code for bank 1.

I would say can't cause it, but I'm hopeful you don't have to buy a catalytic converter so soon. Mostly just because I haven't taken mine off and I don't want to worry about them going bad at only 40,000

Kind of agree with what he ^^^ said. Don't think it's your MAF as it would cause Cels for both banks and it probably would throw codes for Too Rich fuel trims in addition to maybe the code you got.

TommyTheCat · 02-02-2015, 12:08 AM

Quote:

Originally Posted by camguynj

Kind of agree with what he ^^^ said. Don't think it's your MAF as it would cause Cels for both banks and it probably would throw codes for Too Rich fuel trims in addition to maybe the code you got.

Well it shouldn't set codes for those period, because the computer only uses the oxygen/air fuel ratio sensors to test the catalytic converters...

Bravo64 · 02-02-2015, 08:34 AM

Does the K&N require a tune after install?

ChevyCamaroGirl · 02-02-2015, 08:45 AM

Quote:

Originally Posted by Bravo64

Does the K&N require a tune after install?

No tune necessary.

camguynj · 02-02-2015, 09:40 AM

Quote:

Originally Posted by TommyTheCat

Well it shouldn't set codes for those period, because the computer only uses the oxygen/air fuel ratio sensors to test the catalytic converters...

Front O2 is only used to set fuel trims (too much oil on intake filter results in less air, less air demands less fuel, too much less fuel demanded would trip a too rich fuel trim CEL). Rear O2 is used to test cat efficiency

redhotcandy · 02-02-2015, 09:44 AM

I had the almost the same thing happen when I had my V6 and installed a K&N cai. The CEL kept coming on, then off, then on but I cannot recall the code. Anyway, I called K&N and explained the situation, and they suggested I send it back to them and they recommended another model number. I did just that, and no more CEL's or any other issues whatsoever. I know somewhere in my postings I have the information on what model number I exchanged it for...hope this helps.

02-01-2015, 09:10 PM	#1
Bravo64 Drives: 2011 Chevy Camaro LS Join Date: Jun 2014 Location: FL Posts: 11	Need some help, please. I have a 2011 LS w/47,500m. Some things have been occurring since I installed a K&N cai system. First, I noticed the mpg declined a bit. I thought you were supposed to gain mpg. Secondly, I notice a lot of black soot accumulating on the inside of the chrome tail pipes. Also, the check engine light recently came on and according to autozone, it spit out code p0420. The check engine light has since disappeared. Question: is there a need to have it tuned after installing the cai? Any ideas? Looking for some assistance. Thank you

02-01-2015, 11:32 PM	#5
Homer2 Drives: 50th Anni.. coming home 11/01 Join Date: Jul 2014 Location: Toronto. Ontario Posts: 1,640	I "thought" the K&N CAI required a tune? __________________ ##################### Built Sept 16/2016 - #2681 of 5955. She came home with me 11/01/16. 50th Anni, 2SS, A8, NPP, NGM Rock Guards, Footwell Lighting, Black Bow Ties, Street Warrior Rotors and Pads, Ceramic Pro, 3M PPF, Oracle Ghosted Side Markers, Kooks 2" headers w/hi flow cats. GPI Stage 1 Cam installed at 305,000 kms.

02-01-2015, 09:14 PM	#2
PhelanZL1 Drives: 2013 ZL1 Join Date: Jun 2013 Location: Land O Lakes Posts: 66	to much oil on the filter, its getting on the mass airflow sensor, make the car run rich, and causes the cel to come on. Make sure there is not to much oli on the filter. Any car parts store sell mass air flow sensor cleaner, be careful the sensor is almost the size of a hair.

02-01-2015, 09:23 PM	#3
MLAZ1990 Drives: 2012 black camaro 2LS Join Date: Nov 2012 Location: Chicago, IL Posts: 3,023 View My Garage	Interesting...going to keep this in mind next time I clean my intake!

02-01-2015, 11:22 PM	#4
TommyTheCat SHKE BKE Drives: 2013 Camaro Join Date: May 2014 Location: SoCal Posts: 3,105	That MAF sensor shouldn't cause a P0420, which is a cat code for bank 1. I would say can't cause it, but I'm hopeful you don't have to buy a catalytic converter so soon. Mostly just because I haven't taken mine off and I don't want to worry about them going bad at only 40,000

02-02-2015, 08:34 AM	#8
Bravo64 Drives: 2011 Chevy Camaro LS Join Date: Jun 2014 Location: FL Posts: 11	Does the K&N require a tune after install?

02-02-2015, 09:44 AM	#11
redhotcandy Drives: 2012 2SS/RS Join Date: Jul 2011 Location: The Great Plains Posts: 568 View My Garage	I had the almost the same thing happen when I had my V6 and installed a K&N cai. The CEL kept coming on, then off, then on but I cannot recall the code. Anyway, I called K&N and explained the situation, and they suggested I send it back to them and they recommended another model number. I did just that, and no more CEL's or any other issues whatsoever. I know somewhere in my postings I have the information on what model number I exchanged it for...hope this helps.