How can I pass emissions test with box Lt headers - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

416Camaro · 11-20-2012, 10:54 AM

I installed my mrt v2 exhaust and k&n intake sound good on the v6 so far but I have obx long tube headers in my garage that I want to install. How can I get a emissions pass with these on my car? Will it be running too rich?

usafboy · 11-20-2012, 10:58 AM

Each state/territory is different. I'd say take the test before installing the headers then right after you pass put them on, then you'll be good for another year

justa25thTA · 11-20-2012, 11:13 AM

long tubes usually fail because of either a visual or lack of cats. If you have cats, and your O2 sensors are reporting, not reason to fail. We don't do tail pipe testing here for cars with OBD2, just hook it up to the computer, and if it reports everything ok, your good to go.

pgustavson · 11-20-2012, 11:19 AM

There's a good possibility that you'll get a CEL after the header install (I believe it's because of O2 sensor relocations). There will be some sort of emissions-related code being thrown, so passing the test would not be possible. You would have to install them and then probably tune the car (Trifecta, IPF) to get rid of the issue. Also - do they do a visual inspection of the exhaust system? Would they fail the car simply because of headers?

jwendorf47 · 11-20-2012, 11:37 AM

You could always find a "friendly" smog tech

416Camaro · 11-20-2012, 02:15 PM

Quote:

Originally Posted by justa25thTA

long tubes usually fail because of either a visual or lack of cats. If you have cats, and your O2 sensors are reporting, not reason to fail. We don't do tail pipe testing here for cars with OBD2, just hook it up to the computer, and if it reports everything ok, your good to go.

When I installed the exhaust Friday mechanic told me they were changing the way to do emissions in Ontario instead of doing a cynical run now there using a machine that hooks up to the cars computer.

416Camaro · 11-20-2012, 02:17 PM

[QUOTE=pgustavson;5827906]There's a good possibility that you'll get a CEL after the header install (I believe it's because of O2 sensor relocations). There will be some sort of emissions-related code being thrown, so passing the test would not be possible. You would have to install them and then probably tune the car (Trifecta, IPF) to get rid of the issue. Also - do they do a visual inspection of the exhaust system? Would they fail the car simply because of headers?
Tuning the car will get rid if the codes?

lscamaro · 11-20-2012, 02:26 PM

Yes and no. Yes the codes will be cleared but depending on what they are looking for, you still might fail. A lot of times, they check that all systems of the car are ready and can have a max of 2 not ready and pass. Well a few members have had a problem with the trifecta tune having more than 2 not ready.

hunterv6 · 11-20-2012, 02:52 PM

^not readys depend on the state and year of car in nc 2 is failure only allow 1

rock1962 · 11-20-2012, 05:18 PM

Emission testing doesn't start until the fifth year for new cars in Ontario. If you plan on keeping the car put the headers on enjoy them and if it doesn't pass in a few years just switch back for the e-test. Get this confirmed but I do not think you will have e-test that car till 2016.

rock1962 · 11-20-2012, 11:42 PM

I am wrong it is 7 years check the ministry website

416Camaro · 11-22-2012, 04:05 AM

^Yea I spoke to them very excited with the news thanks for the advice. I will be talking to my mechanic and installing them soon.

11-20-2012, 10:54 AM	#1
416Camaro Drives: 2011 Camaro LS Join Date: Oct 2012 Location: Toronto Posts: 296	How can I pass emissions test with box Lt headers I installed my mrt v2 exhaust and k&n intake sound good on the v6 so far but I have obx long tube headers in my garage that I want to install. How can I get a emissions pass with these on my car? Will it be running too rich?

11-20-2012, 10:58 AM	#2
usafboy Drives: 2010 Silver SS/RS LS3 Join Date: Nov 2011 Location: Colorado Springs, CO Posts: 882	Each state/territory is different. I'd say take the test before installing the headers then right after you pass put them on, then you'll be good for another year __________________ 2010 Silver Ice Metallic Camaro SS/RS LS3 Mods...so far: resonator/muffler delete, tinted everything, '13 shift knob/boot, bowtie delete, PFADT sway bars, CAI intake, Hurst short shifter, JBA cat deletes, BMR trailing arms/outer bushings/steering rack bushing, Bo White ported TB. Rhino79 Dyno tuned...405 HP/399 TQ

11-20-2012, 11:13 AM	#3
justa25thTA Drives: 2011 Camaro SS/RS LS3 Join Date: Aug 2010 Location: Texas Posts: 1,630	long tubes usually fail because of either a visual or lack of cats. If you have cats, and your O2 sensors are reporting, not reason to fail. We don't do tail pipe testing here for cars with OBD2, just hook it up to the computer, and if it reports everything ok, your good to go. __________________ Yeah, I'll get around to it...

11-20-2012, 11:19 AM	#4
pgustavson Stop writing "vert", ffs! Drives: 2011 2LT Convertible Join Date: Feb 2012 Location: Gambrills, MD Posts: 1,341 View My Garage	There's a good possibility that you'll get a CEL after the header install (I believe it's because of O2 sensor relocations). There will be some sort of emissions-related code being thrown, so passing the test would not be possible. You would have to install them and then probably tune the car (Trifecta, IPF) to get rid of the issue. Also - do they do a visual inspection of the exhaust system? Would they fail the car simply because of headers? __________________ Vararam \| Vmax Ported TB \| Ported IM \| Vmax Black ICE-olator

11-20-2012, 02:26 PM	#8
lscamaro Drives: 2011 CGM Camaro LS A6 Join Date: Jan 2011 Location: San Antonio, Texas Posts: 10,305	Yes and no. Yes the codes will be cleared but depending on what they are looking for, you still might fail. A lot of times, they check that all systems of the car are ready and can have a max of 2 not ready and pass. Well a few members have had a problem with the trifecta tune having more than 2 not ready. __________________ Click Picture for Build Thread

11-20-2012, 11:37 AM	#5
jwendorf47 Drives: 2013 LS3 Join Date: Jul 2011 Location: Orange County, CA Posts: 68	You could always find a "friendly" smog tech

11-20-2012, 02:17 PM	#7
416Camaro Drives: 2011 Camaro LS Join Date: Oct 2012 Location: Toronto Posts: 296	[QUOTE=pgustavson;5827906]There's a good possibility that you'll get a CEL after the header install (I believe it's because of O2 sensor relocations). There will be some sort of emissions-related code being thrown, so passing the test would not be possible. You would have to install them and then probably tune the car (Trifecta, IPF) to get rid of the issue. Also - do they do a visual inspection of the exhaust system? Would they fail the car simply because of headers? Tuning the car will get rid if the codes?

11-20-2012, 02:52 PM	#9
hunterv6 Always bet on Black Drives: 2011 turbo LS, 2012 f 150, Join Date: Nov 2010 Location: Concord Nc Posts: 1,983	^not readys depend on the state and year of car in nc 2 is failure only allow 1 __________________

11-20-2012, 05:18 PM	#10
rock1962 Drives: 2018 Camaro SS Join Date: Aug 2011 Location: ontario canada Posts: 442 View My Garage	Emission testing doesn't start until the fifth year for new cars in Ontario. If you plan on keeping the car put the headers on enjoy them and if it doesn't pass in a few years just switch back for the e-test. Get this confirmed but I do not think you will have e-test that car till 2016.

11-20-2012, 11:42 PM	#11
rock1962 Drives: 2018 Camaro SS Join Date: Aug 2011 Location: ontario canada Posts: 442 View My Garage	I am wrong it is 7 years check the ministry website

11-22-2012, 04:05 AM	#12
416Camaro Drives: 2011 Camaro LS Join Date: Oct 2012 Location: Toronto Posts: 296	^Yea I spoke to them very excited with the news thanks for the advice. I will be talking to my mechanic and installing them soon.