Exhaust and tune ?
10-28-2018, 01:02 PM
#46
I believe what Cali does is plug in to check the system. If it passes they use their diagnostics computer to trigger the emission monitors to reset and see if the ECU programing sets them to "ready" without doing the mileage and thus has emission check defeat software.
10-28-2018, 03:19 PM
#47
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Readiness monitors are another can of worms here. In Kali you are only ( now ) allowed the EVAP to be not ready.
Tuned or untuned, if all monitors are not set to "ready" don't even bother asking the tech to plug in to the dme as it's an immediate fail.
Some testers will "check" first so if there's a problem it won't be reported as a "fail". Some will not. Best to "know a guy". Even more important given the ever tightening restrictions on passing here is to scan your DME pre test.
Lastly, there are NO cars that will be ready if the codes have been cleared until a full requisite drive cycle has been SUCCESSFULLY completed.
That alone, can cause you issues for weeks. My last re-set took 1000 miles. But that's only as I was unable to follow the simple step by steps of the drive cycle, as I live on a mountain.
It's all getting tricky.
Tuned or untuned, if all monitors are not set to "ready" don't even bother asking the tech to plug in to the dme as it's an immediate fail.
Some testers will "check" first so if there's a problem it won't be reported as a "fail". Some will not. Best to "know a guy". Even more important given the ever tightening restrictions on passing here is to scan your DME pre test.
Lastly, there are NO cars that will be ready if the codes have been cleared until a full requisite drive cycle has been SUCCESSFULLY completed.
That alone, can cause you issues for weeks. My last re-set took 1000 miles. But that's only as I was unable to follow the simple step by steps of the drive cycle, as I live on a mountain.
It's all getting tricky.
10-28-2018, 09:20 PM
#48
33krazy!, that's what they're looking for. A car with a tune on it that's pushing the monitors to read ready will have them pop "ready" instantly after resetting them.
That's how the emissions place knows something isn't stock because as you say, they won't read "ready" right away
That's how the emissions place knows something isn't stock because as you say, they won't read "ready" right away
10-29-2018, 10:22 AM
#49
Rennlist Member
if you have a completely legal; and stock and disconnect the battery you have to reset the moniters to get them to ready status. tales 50 mile minimum. if they reset the moniters at the testing station they wont get a single car to pass. the dme doesnt have a clue about modifications as long as all the moniters read ready or n/a. in cali that would be a visual inspection to see those. the computer merely wants to see of they are ready or n/a
I've been told this is happening in Massachusetts. It's easy for them to do and I'm sure others will do it in the future as well.
John, I haven't had an issue here in Colorado either, they just read the car and check the gas cap. Since I have cats and a tune that doesn't play with the emissions monitors I pass without problems
10-29-2018, 11:22 AM
#51
They are checking the monitors to see if they're set. Then they're resetting them and checking them again. If they're reading "ready" directly after resetting them, then they know you have a tune that's messing with the emissions monitors and they fail you.
I've been told this is happening in Massachusetts. It's easy for them to do and I'm sure others will do it in the future as well.
John, I haven't had an issue here in Colorado either, they just read the car and check the gas cap. Since I have cats and a tune that doesn't play with the emissions monitors I pass without problems
I've been told this is happening in Massachusetts. It's easy for them to do and I'm sure others will do it in the future as well.
John, I haven't had an issue here in Colorado either, they just read the car and check the gas cap. Since I have cats and a tune that doesn't play with the emissions monitors I pass without problems
10-29-2018, 01:09 PM
#52
Three Wheelin'
10-29-2018, 01:36 PM
#53
I am a new guy here and confused to what you guys mean when you say visual and monitors. Are there any after market exhaust systems that will pass CA. smog tests? Are they worth paying thousands of dollars on?
10-29-2018, 04:58 PM
#54
visual is justb that. the shop or facility visually checking for a modified exhaust. moniters are in the dme such as O2 readiness secondary air readiness O2 heater readiness monitors. typically there 5-7 monitors that the computer plug in checks for
10-29-2018, 05:01 PM
#55
They are checking the monitors to see if they're set. Then they're resetting them and checking them again. If they're reading "ready" directly after resetting them, then they know you have a tune that's messing with the emissions monitors and they fail you.
I've been told this is happening in Massachusetts. It's easy for them to do and I'm sure others will do it in the future as well.
John, I haven't had an issue here in Colorado either, they just read the car and check the gas cap. Since I have cats and a tune that doesn't play with the emissions monitors I pass without problems
I've been told this is happening in Massachusetts. It's easy for them to do and I'm sure others will do it in the future as well.
John, I haven't had an issue here in Colorado either, they just read the car and check the gas cap. Since I have cats and a tune that doesn't play with the emissions monitors I pass without problems
10-29-2018, 05:43 PM
#57
10-29-2018, 06:26 PM
#58
Rennlist Member
my issue with this is that it would be a completely random test. why would they reset anything on a 2014 buick regal owned by a 65 yr old woman? if they test it and it passes why reset it? same could be said for 300,000$ lambo that rolls in . govt testing is supposed to be equal across the board for all testing . for any shop to randomly reset moniters if the car passes first time thru would be suspect to me
10-29-2018, 07:24 PM
#59
My old UMW tune pushed all the monitors to ready. If you have a UMW Tune it may be doing the same unless mine was set up to do that while others are not. It’s easy enough to check. Simply reset your emission monitors with durametric and see if they show ready or not ready right away. Mine always showed ready no matter what. On my Cayenne it will show not ready after a reset and then takes some driving around for everything to go back to ready.
10-29-2018, 07:27 PM
#60
a 996 turbo is considered to be a 'high emitter" in CA. don't know why? i get at least 9 to 15 mpg.
add: 32krazy's right about the "reset" at the test station. no car that i'm aware of will immediately re-set to *ready*. they will tell you that when you go there. if you have JUST reset them or even a CEL? dont bother plugging in. drive cycle or a 100 miles or so. then "test".
add: 32krazy's right about the "reset" at the test station. no car that i'm aware of will immediately re-set to *ready*. they will tell you that when you go there. if you have JUST reset them or even a CEL? dont bother plugging in. drive cycle or a 100 miles or so. then "test".
Last edited by "02996ttx50; 10-29-2018 at 07:52 PM.