uprev and emissions
 

so i was reading a thread on uprev and emissions...so apparently this guy failed with uprev tune and what not? anybody know anything about this . im getting one soon but im in jersey and i needa pass emissions. theres a stock map isnt there. im confused on the thread nd need someone to explain this to me bc i need to pass emissions didnt think a tune could hurt.

anyone???

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bump

It depends -- how do they do the test in Jersey and what other mods did the guy have -- most people don't get a tune with all stock breather parts.

It could have failed on visual inspection with intakes, for example, or the person might have had non-OEM cats (or none) and failed either visual or emission output, which will not be improved from the tune.

If everything was stock and he failed, then flash it back to stock before inspection and re-flash the tune on there after.

If the issue was mechanical/actual emissions produced, and NOT just due to the tune, then it all depends on the mods and where you get tested -- good luck.

hfc exhaust and intakes is wat i have

Some states fail you if the downstream O2 sensors are turned off or are showing not ready. Some don't care. Might be worth posting in your regional subforum for the specifics in your state.

im in jersey said that above....we do visual and obd port ij state inspections i contacted jds motorsports and jas said hes never heard of this bs of not passing emissions with uprev

If the post-cat O2 DTC is turned off, that might be picked up from the OBDII port like Chuck said.

In your case it is possible that the intakes fail visual or the HFC's don't pass smog. Best bet is to simply have the ECU put back to stock temporarily or at least make sure all your DTC codes are ready (i.e., not turned off in the uprev menu).

ok true. i passed with hfc and intakes both visual and obd but i think that if i go back to stock map ill be good

I've passed w/ uprev, art pipes, stillens and fi cbe. All my monitors were on and ready. Invest in a code reader and be ready when you go.

edit: just realized you said "visual". That's a tough one.

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so basically tell the tuner to make sure all DTC is activated and codes are turned on then emissions wise i should be good? or i could just tell him to have them on for the stock map and select the stock map before inspections

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yeah exactly but with high flow cats i already passed once with them visuals and OBDII so that shouldnt be an issue...did u just go back to stock map when going through emissions

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also did u have to tell ur tuner to keep all DTC monitors on ? i know that DTC can be shut off causing the OBDII port at DMV to say "not supported" or "not ready"

If you passed before with HFC and intakes, unless they're doing something new since last inspection, it's gotta be the DTC monitors.

Have them all on for the inspection and you should be gtg :tup:

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cool so jus tell tuner to keep all DTC monitors on...?
ps: do i have to go back to stock maps before inspections

Since no one, including yourself, seems to know what was done for your tune, it's going to be impossible to answer your question. The fact that every state has different regulations and procedures only makes things worse. You need to talk to someone familiar with smog testing in your area.

An OBD/CAN monitor plus a tailpipe sniffer should be able to give you a good indication of where you sit, but you will need to be able to interpret the readings.

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I didnt even get a tune yet im asking before I do...also I said many times its OBDii and visual testing in nj. .

OK wow so you have no tune? And have yet to get your sticker and am worried about failing with UPRV? Is that accurate BTW my head hurts reading this your questions are all over the place,

So I don't know of any Z or G that failed with UPREV and only know subi and EVO guys where having issues with sensor being shut of because of NO CATs and or EGR valves. And or running EURO ECU's

There also was some clown YES IMO clown who came on here and started some BS about failing in MA with UPREV. I had a valid Sticker with UPREV and a Stillen SC, There are more than a handful of MA guys that have stickers and have UPREV on here. One was a few post above. MA and NJ look like they run the same inspections. OBDII and visual as LONG as you have nothing shut off you should be all set, If you have HFC's them make sure they are not throwing a code, If they are and you have it tuned for that I believe the tune shuts that sensor off, Hence Fail if the system sees that sensor as NOT ready on NOT supported and you are to have one. Not completely sure how the NOT supported works tho. But maybe try next time just say "Thinking of Getting UPREV any issues with emissions test" .02

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Sorry for not being clear but yeah I have a sticker my inspection is in 2 years im askin all this bc of that guy that failed on MD with uprev saying certain systems are "not supported" im jus scared with uprev I wont pass. Currently I do have a sticker

And also currently I have an incomplete in my catalyst and a few other systems I do have a minor leak in my evap system but thats about it. Does that change to complete by the dealer doin the specific SRT or is it just my personal driving cycle? I wont pass with that either

Well you answered you own question with the "not supported" comment. That means he had sensors off. Usually the second set of o2's if he had cats or TP's. As long as you don't have anything shut off you'll be fine. I have HFC's NO cel and tune and I'm fine.

No James, I was on tuned map. I just made sure all monitors were in ready state. I went back to the tuner because my catalyst monitors were turned off.

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So u jus went back to tuner to make sure everything was ok for emissions? Also did they charge u to do that

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Ok now what about my comment about the incomplete for the catalyst and stuff..is that just my own driving cycle or the SRT that the dealer has to complete for me

Look, I've lived in two states with pretty stringent emissions laws, and had "tuned" cars in both. As long as you don't have a CEL on, and all emissions systems show "ready" or "run" on an OBDII reader (which you can check youself)' you should be fine. They will be looking for a CEL or monitors that are not showing in run condition, that's it. A tune will adjust your fuel trims, and can also be used to turn "off" certain things (like the CEL for down stream O2 sensors), adjust your fan on/off temps, etc...

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ight thanks but what about my SRT question or the driving cycle...

No charge for going back. I would call your tuner and see what he's turned on/off and invest in scantool or plx wifi/bluetooth.

What do you mean "incomplete"? What does SRT stand for in this context? :confused:

Does that mean you have not yet had the cat and related O2's checked for functionality?

I think new cars don't require smog testing the first year or two, at least in some states, so if you have a fairly new car the emissions may have not been tested yet...?

Anyway, in summary:

1. Every state is a bit different, so what passes or fails in one may or may not pass or fail in another.

2. If the HFC's you have on give acceptable emission gas readings from tail pipe test, you should pass the smog test (although technically, changing the cats AT ALL is not really federally legal... but if you pass a visual check, you are fine and don't need to worry.)

3. If the 2ndary (i.e., post cat) O2's are ON and ready, it should pass the OBDII check; having uprev on the ECU should not matter (or even be detected).

Ok, I can only assume by "incomplete"' you mean that the dealer told you they are showing a monitor that is not showing a "ready" or "run". This can, as any CEL can, go away after a certain number of driving cycles if the ECM doesn't see an issue over time. If it's related to a mod you made to the O2 sensors or cats, then it will probably not just go away, and will require a modification by a tuner.

I had this issue with my last Z06 after a LTH, HFC and Katach 110 cam install. Had my local LS tuner take care of it with HPTuners software. No emissions issues.....lumpy idle and all.��

Did anybody ever figure out what SRT means? I did a quick web search and didn't see anything that would apply to the topic at hand. I drive a Challenger SRT now, but I'm pretty sure that's not it. :)

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its a driving cycle System Readiness Test. only nissan techs know i only know bc one of them told me

Thanks :tiphat:

Ohhhh. Ok.

I think so long as you have no pending codes (they can be cleared with uprev or a scantool) and the O2 is ready, you should be ok when they test you. Well, just so long as it doesn't throw a pending code (or CEL) during the test and tailpipe emission readings are within limits...

Otherwise, I'm not sure -- sounds like Olddude definitely knows what he's talking about on this one.