failed smog :( - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Blubird68 · 08-17-2018, 11:59 AM

so i did the complete exhaust, i have texas speed long tubes going into a borla atak catback. I did the install a good 2 months ago and then i did the SCT tune a few days later. I deleted the rear o2s and havent had a check engine light since then. i only work 4 miles away but ive had to put a couple hundred miles on it since then. The test results said "OBD EVAP" and "OXY SNSR" N for result and Not Completed under additional information. everything went smooth until the print out, i thought as long as it passed visual and the engine light wasnt on it would pass. Can it see that the rear o2s were turned off/deleted ?

Blubird68 · 08-17-2018, 12:12 PM

oh i think i messed up because my car wasnt warmed up enough

Blubird68 · 08-17-2018, 01:09 PM

Ok that wasn’t it, I just drove a good 10 miles and it’s plenty warmed up but the guy said it has nothing to do with temperature and that someone has been working on the car, and I’m like trust me I’d know it’s my car and I’m the one who works on it. Then told me the engine light is probably going to come on again 🙄. So I don’t know what it is

HyperV117 · 08-17-2018, 01:31 PM

EVAP is related to the gas canister isn't it?

Blubird68 · 08-17-2018, 01:56 PM

Well it’s acting like the computer was reset recently/battery disconnected but it hasn’t. Basically it’s saying the car hasn’t gone through a driving cycle but it has

shibbs · 08-17-2018, 02:03 PM

If you flashed it recently, or cleared the codes, it can take up to 500 miles for the computer to flag the "ready" status.

Blubird68 · 08-17-2018, 02:09 PM

Oh wow didn’t know that, yeah I probably only put a good 200 miles on it

shibbs · 08-17-2018, 02:30 PM

Quote:

Originally Posted by Blubird68

Oh wow didn’t know that, yeah I probably only put a good 200 miles on it

Yep. Keep going without plugging anything into the OBD port about another 300 miles.

hammdo · 08-17-2018, 03:06 PM

Did you tune out the rear 02 sensors when the long tube were installed?
EVAP takes forever...

This is what I had to do for the EVAP:

https://www.camaro5.com/forums/showp...&postcount=627

-Don

Blubird68 · 08-17-2018, 03:10 PM

Yeah I did tune them out, didn’t know there was a whole procedure for the reset. Thought you just had to do a few driving cycles

Blubird68 · 08-18-2018, 12:00 PM

Does anyone know if turning off the rear o2s cause it to be not ready ? Has anyone passed smog with long tubes ?

rontammy0 · 08-18-2018, 05:10 PM

Quote:

Originally Posted by Blubird68

Does anyone know if turning off the rear o2s cause it to be not ready ? Has anyone passed smog with long tubes ?

I just had my longtubes put in in April....car was not driven all winter. Didn't put many miles on it at all before doing my emissions on May 6. Zero issues. Im not sure if the should be turned off. Shouldnt they be set to say "ready" ? I could be wrong .

rontammy0 · 08-18-2018, 05:11 PM

Quote:

Originally Posted by Blubird68

Yeah I did tune them out, didn’t know there was a whole procedure for the reset. Thought you just had to do a few driving cycles

I put hardly any miles on between the headrr install and the emissions test.

102SS · 08-18-2018, 05:40 PM

When the car is tuned some tuners make the mistake of turning the monitors off.

This will cause you to fail the OBD2 plug in test.

The driving cycle to reset the computer for a 5th Gen is bizarre my friend sells used cars and he said you need so many miles at certain speeds.

08-17-2018, 11:59 AM	#1
Blubird68 Drives: 1993 z28/2010 2SS Join Date: Aug 2015 Location: Las Vegas/Oshawa Posts: 115	failed smog :( so i did the complete exhaust, i have texas speed long tubes going into a borla atak catback. I did the install a good 2 months ago and then i did the SCT tune a few days later. I deleted the rear o2s and havent had a check engine light since then. i only work 4 miles away but ive had to put a couple hundred miles on it since then. The test results said "OBD EVAP" and "OXY SNSR" N for result and Not Completed under additional information. everything went smooth until the print out, i thought as long as it passed visual and the engine light wasnt on it would pass. Can it see that the rear o2s were turned off/deleted ?

08-17-2018, 01:31 PM	#4
HyperV117 Drives: 2010 Camaro 1SS Join Date: Nov 2015 Location: CA Posts: 358	EVAP is related to the gas canister isn't it? __________________

08-17-2018, 03:06 PM	#9
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,694 View My Garage	Did you tune out the rear 02 sensors when the long tube were installed? EVAP takes forever... This is what I had to do for the EVAP: https://www.camaro5.com/forums/showp...&postcount=627 -Don __________________ 747 RWHP 794 RWTQ "Horsepower sells cars, torque wins races." - Enzo Ferrari See My Build: http://www.camaro5.com/forums/showthread.php?t=385577

08-18-2018, 05:40 PM	#14
102SS waiting at the tree Drives: SIM 2010 2SS/RS A6 Join Date: Apr 2013 Location: Niagara Falls Posts: 3,131	When the car is tuned some tuners make the mistake of turning the monitors off. This will cause you to fail the OBD2 plug in test. The driving cycle to reset the computer for a 5th Gen is bizarre my friend sells used cars and he said you need so many miles at certain speeds. __________________ 2010 2SS/RS A6 ZL1 Rims 60ft 2.03 13.08 at 107.82 (4/28) 2009 Pontiac G8 3.6L the DD

08-17-2018, 12:12 PM	#2
Blubird68 Drives: 1993 z28/2010 2SS Join Date: Aug 2015 Location: Las Vegas/Oshawa Posts: 115	oh i think i messed up because my car wasnt warmed up enough

08-17-2018, 01:09 PM	#3
Blubird68 Drives: 1993 z28/2010 2SS Join Date: Aug 2015 Location: Las Vegas/Oshawa Posts: 115	Ok that wasn’t it, I just drove a good 10 miles and it’s plenty warmed up but the guy said it has nothing to do with temperature and that someone has been working on the car, and I’m like trust me I’d know it’s my car and I’m the one who works on it. Then told me the engine light is probably going to come on again 🙄. So I don’t know what it is

08-17-2018, 01:56 PM	#5
Blubird68 Drives: 1993 z28/2010 2SS Join Date: Aug 2015 Location: Las Vegas/Oshawa Posts: 115	Well it’s acting like the computer was reset recently/battery disconnected but it hasn’t. Basically it’s saying the car hasn’t gone through a driving cycle but it has

08-17-2018, 02:09 PM	#7
Blubird68 Drives: 1993 z28/2010 2SS Join Date: Aug 2015 Location: Las Vegas/Oshawa Posts: 115	Oh wow didn’t know that, yeah I probably only put a good 200 miles on it

08-17-2018, 03:10 PM	#10
Blubird68 Drives: 1993 z28/2010 2SS Join Date: Aug 2015 Location: Las Vegas/Oshawa Posts: 115	Yeah I did tune them out, didn’t know there was a whole procedure for the reset. Thought you just had to do a few driving cycles

08-18-2018, 12:00 PM	#11
Blubird68 Drives: 1993 z28/2010 2SS Join Date: Aug 2015 Location: Las Vegas/Oshawa Posts: 115	Does anyone know if turning off the rear o2s cause it to be not ready ? Has anyone passed smog with long tubes ?