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[Z06] Due for OBD-ii E-test. Cammed car - any issues?

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Old 04-04-2015, 06:11 PM
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RedZ4me
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Default Due for OBD-ii E-test. Cammed car - any issues?

This will be my first e-test for ANY toy I've had - up here, once you reach 7 years old, time to go every two years. (Friggen cash grab!!) My mechanic buddy tells me I should be good as battery has not been disconnected and have never had a code since the heads/cam/intake mod almost 2 years ago. I have heads, mild cam, intake/tune but full stock exhaust including cats.
Old 04-04-2015, 07:03 PM
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DaOtherOne
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No codes, no issues
Old 04-04-2015, 08:56 PM
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Twistedpixels
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Ya I am trying to find a place in Socal that will do this test that I can rely on.
Old 04-04-2015, 11:00 PM
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Originally Posted by RedZ4me
This will be my first e-test for ANY toy I've had - up here, once you reach 7 years old, time to go every two years. (Friggen cash grab!!) My mechanic buddy tells me I should be good as battery has not been disconnected and have never had a code since the heads/cam/intake mod almost 2 years ago. I have heads, mild cam, intake/tune but full stock exhaust including cats.
I'm in Texas, be we still have inspections. I have all that you do plus a complete aftermarket exhaust from headers to the mufflers. Run High Flow cats. Here you can pass with one fault, mine has an O2 sensor fault bc of the headers and cats, but I still pass. Check and see how many faults you are allowed. You probably won't have any, but just bc you don't have a check wallet light, does not mean there aren't some systems that show as not ready, which inspectors consider a fault.
Old 04-05-2015, 12:51 AM
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Originally Posted by DaOtherOne
No codes, no issues
Unfortunately it's not that simple. In addition to not having any codes, they also check to make sure your various OBD systems are in a ready state which if you've have mods done to the car will probably not be the case.
Old 04-05-2015, 01:10 AM
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Originally Posted by subfloor@centurytrans
Unfortunately it's not that simple. In addition to not having any codes, they also check to make sure your various OBD systems are in a ready state which if you've have mods done to the car will probably not be the case.
Agreed.
Old 04-05-2015, 01:17 AM
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Hib Halverson
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Whether or not a "cammed" car can pass emissions depends on what State test you're trying to pass, how radical the cam is and how well the closed loop part of your "tune" was done.

Also, some States now require all readiness flags set and sometimes it's hard to get engines with aftermarket cals and aftermarket low temp thermostats to set all the flags.

You need a scan tester which will read readiness flags. Then you need the Service Manual for it's drive cycle which will force all the readiness tests to run and set. You drive the car exactly as the drive cycle information says while watching your scanner to see if all the flags set. Once you see they're all set, then you go Smog Test.

For the member who was asking about a Smog test station in the L.A. Area which really knows its, stuff try Quality Auto Service in Pomona. Ask for Mike Garibay and tell him Hib Halverson sent you in. 909-596-5502. I haven't seen Mike since I move out of the greater L.A. area in 2012, but he always did my Smog work and seriously understands the whole Smog Check system.
Old 04-05-2015, 12:35 PM
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Originally Posted by Hib Halverson
Whether or not a "cammed" car can pass emissions depends on what State test you're trying to pass, how radical the cam is and how well the closed loop part of your "tune" was done.

Also, some States now require all readiness flags set and sometimes it's hard to get engines with aftermarket cals and aftermarket low temp thermostats to set all the flags.

You need a scan tester which will read readiness flags. Then you need the Service Manual for it's drive cycle which will force all the readiness tests to run and set. You drive the car exactly as the drive cycle information says while watching your scanner to see if all the flags set. Once you see they're all set, then you go Smog Test.
If I may suggest something I just got and already reaped the rewards with. If you want a relatively inexpensive, but useful tool to read codes, clear codes, check readiness of systems, and a few other useful items check out the Torque app for Android. If you are not an Android owner you probably can find a used phone or tablet on the "Bay" for cheap (make sure it is compatible with Torque) and next you will need a Blue tooth OBD II module that plugs into the OBD II port (less than $10). Check the reviews on the modules, some work some do not. I got mine from Newegg. It has already helped me diagnose a problem with my Jeep. Instead of paying anybody I diagnosed a leaky gas cap and fixed it myself for $6. Torque also gives you a customizeable guage cluster and and a 0-60 timer, and data logging.
Old 04-05-2015, 02:54 PM
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Originally Posted by Hib Halverson
Whether or not a "cammed" car can pass emissions depends on what State test you're trying to pass, how radical the cam is and how well the closed loop part of your "tune" was done.

Also, some States now require all readiness flags set and sometimes it's hard to get engines with aftermarket cals and aftermarket low temp thermostats to set all the flags.

You need a scan tester which will read readiness flags. Then you need the Service Manual for it's drive cycle which will force all the readiness tests to run and set. You drive the car exactly as the drive cycle information says while watching your scanner to see if all the flags set. Once you see they're all set, then you go Smog Test.

For the member who was asking about a Smog test station in the L.A. Area which really knows its, stuff try Quality Auto Service in Pomona. Ask for Mike Garibay and tell him Hib Halverson sent you in. 909-596-5502. I haven't seen Mike since I move out of the greater L.A. area in 2012, but he always did my Smog work and seriously understands the whole Smog Check system.
If you've got access to HP Tuners, the drive cycle is not necessary as I know how to tweak the tune to have all the systems show as ready immediately.
Old 04-05-2015, 06:47 PM
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"RedZ4me" to better understand how these things work, you need to look up in the Factory Service Manual to see what DTC tests must run for each flag to set. Then if you have HPT, download your existing cal and save it then save as, give it a new name, then you go into the new cal select engine diag., select DTCs, find those codes, leave the SES box checked, but set the "error mode" to "no error reported".

Do that right and your readiness flags will set to "yes"

After you are though doing that for whatever diagnostic or education purposes you have, put the previous cal back in the ECM.

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