Question on Tunes and emissions - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

MillerTime · 10-01-2010, 11:12 AM

Warranties aside, When a vehicle is tuned and the 02 sensors are ignored will the state emissions OBD2 test show not ready or will it show as OK on their scanner?
I want a tune, but not if I won't pass the emissions because it shows not ready. In AZ they will plug the diagnostics into the OBD2 port and if everything is OK on the system then nothing else is done...

Thx for the input.

mike@newera · 10-01-2010, 12:35 PM

Assuming you mean the rear o2's, the monitors will still complete as they don't get tested. The fronts are a different story though.

Slowhawk · 10-01-2010, 02:18 PM

With the right tuning you can pass any readiness test out there.I've tuned full open loop car to pass no problem -meaning they had no MAF,no 02's at all.

MillerTime · 10-02-2010, 06:50 AM

Yeah I mean the rear o2's. I could care less about the light being on, just will need to pass emissions down the road. Thx for the responses.

flyby · 10-02-2010, 07:39 AM

If you have a check engine light on your car will not even be checked. A CEL in NJ is an automatic failure. However, you can get tuned and have no CEL and no problems.

MillerTime · 10-02-2010, 09:43 AM

Quote:

Originally Posted by flyby

If you have a check engine light on your car will not even be checked. A CEL in NJ is an automatic failure. However, you can get tuned and have no CEL and no problems.

I am well aware of this. I also know that unless tuned properly they CEL will be off but the 02 system will show not ready, in which case you fail the test.... I want to be sure that a custom tune will show the entire system as running normal and completely ignore the rear 02's as if they are getting correct readings.

10-01-2010, 11:12 AM	#1
MillerTime Blowin the doors off! Drives: A 2013 SS RS 6M SR Join Date: Apr 2010 Location: Phoenix, AZ Posts: 2,390	Question on Tunes and emissions Warranties aside, When a vehicle is tuned and the 02 sensors are ignored will the state emissions OBD2 test show not ready or will it show as OK on their scanner? I want a tune, but not if I won't pass the emissions because it shows not ready. In AZ they will plug the diagnostics into the OBD2 port and if everything is OK on the system then nothing else is done... Thx for the input. __________________ 2G1FS1EWXD9163847

10-02-2010, 06:50 AM	#4
MillerTime Blowin the doors off! Drives: A 2013 SS RS 6M SR Join Date: Apr 2010 Location: Phoenix, AZ Posts: 2,390	Yeah I mean the rear o2's. I could care less about the light being on, just will need to pass emissions down the road. Thx for the responses. __________________ 2G1FS1EWXD9163847

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10-01-2010, 12:35 PM	#2
mike@newera Drives: 2016 Camaro SS Join Date: Jan 2009 Location: Rochester, NY Posts: 529	Assuming you mean the rear o2's, the monitors will still complete as they don't get tested. The fronts are a different story though.

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Slowhawk Drives: 1999 Trans Am Join Date: Jul 2009 Location: Bridgewater,Ma Posts: 2,017	With the right tuning you can pass any readiness test out there.I've tuned full open loop car to pass no problem -meaning they had no MAF,no 02's at all.

10-02-2010, 07:39 AM	#5
flyby Drives: 2010 Silver SS Join Date: Sep 2009 Location: Glen Gardner, NJ Posts: 1,336 View My Garage	If you have a check engine light on your car will not even be checked. A CEL in NJ is an automatic failure. However, you can get tuned and have no CEL and no problems.