Nissan 370Z Forum
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Nissan 370Z Forum (http://www.the370z.com/)
-   Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)
-   -   UPREV Tuned can't pass EMISSIONS (http://www.the370z.com/engine-drivetrain/74452-uprev-tuned-cant-pass-emissions.html)

DEpointfive0 07-27-2013 01:24 PM
Quote:
Originally Posted by dmhenderson (Post 2421486)
I wish I 'knew a guy' in Maryland but inspections are run by the state - as in "state inspection stations run by the government" you have to visit every two years.
So... How do you pass? Or is there no visual, and you slap your stock cats on every 2 years?

dmhenderson 07-27-2013 03:46 PM
No visual (that I remember). I have hi-flow cats on the car not test pipes. That was my point. I'd rather run straight pipes.
Edit: Also, my car isn't two years old yet.

rich2342 02-08-2014 10:06 AM
Quote:
Originally Posted by phunk (Post 2420375)
why dont you just ask them to reactivate your DTCs on your existing map? This would solve your problem, and keep your tune you already have. Then you wouldnt have to go back and flash again after emissions. Its like a 30 second process.
It's not all about the DTC's being disabled. It has to do with the states computer identifying the ROM has been flashed which results in failure. Massachusetts recently implemented the same measures and I went through this already. Have to flash back to stock.

phunk 02-08-2014 12:10 PM
I can't believe they would spend so much energy to try and crack down on the very few and small percentage of drivers who change their ecu roms! What a waste of resources.

DEpointfive0 02-08-2014 01:06 PM
Quote:
Originally Posted by phunk (Post 2684700)
I can't believe they would spend so much energy to try and crack down on the very few and small percentage of drivers who change their ecu roms! What a waste of resources.
Welcome to the gorvernment, good to have you here! :tiphat:

gbrettin 02-08-2014 07:32 PM
Mother-F... I'm thinking about moving to MD or AZ. Both states have vehicle inspections. One of the few upsides here in Michigan is that there are no vehicle inspections. Heck, I bet I could get away with running headers and test pipes W/O an exhaust.

TVPostSound 02-08-2014 07:43 PM
Uprev tuner disabled the DTCs die to not having cats, otherwise DTCs would go off.

Once the stock tune is returned, DTCs will be set due to O2 senors reading high due to no cats, failing again.

The only fix is to reinstall the cats, and the stock tune.

roplusbee 02-08-2014 07:51 PM
Since when does AZ have emissions testing? MD does and it is not that bad. If you have stored codes, they will dig deeper. Otherwise, you should be good to go.

Cbtech 02-08-2014 08:10 PM
Quote:
Originally Posted by roplusbee (Post 2685021)
Since when does AZ have emissions testing? MD does and it is not that bad. If you have stored codes, they will dig deeper. Otherwise, you should be good to go.
http://www.azdeq.gov/environ/air/vei/

jlo370z 02-08-2014 08:13 PM
Quote:
Originally Posted by TVPostSound (Post 2685015)
Uprev tuner disabled the DTCs die to not having cats, otherwise DTCs would go off.

Once the stock tune is returned, DTCs will be set due to O2 senors reading high due to no cats, failing again.

The only fix is to reinstall the cats, and the stock tune.
who needs a fix when you can use a band aid.

two tunes identical, one with dtcs on and one with them off. when you have to test, flash to the ones with them in the ready position. drive 100 miles and test before they turn on. pass test, flash back to the other tune with them off

rich2342 02-09-2014 07:42 AM
Quote:
Originally Posted by jlo370z (Post 2685050)
who needs a fix when you can use a band aid.

two tunes identical, one with dtcs on and one with them off. when you have to test, flash to the ones with them in the ready position. drive 100 miles and test before they turn on. pass test, flash back to the other tune with them off
Either way the ROM will still be flashed and cause a failure.

mag_black 02-09-2014 10:18 AM
Quote:
Originally Posted by jlo370z (Post 2685050)
who needs a fix when you can use a band aid.

two tunes identical, one with dtcs on and one with them off. when you have to test, flash to the ones with them in the ready position. drive 100 miles and test before they turn on. pass test, flash back to the other tune with them off
That's not a bad idea, but most people here use a tuner and don't own a cipher cable.

I'm going in 2 months and I know others w/ uprev that have passed. We'll find out soon enough. I'll be more than prepared.

gbrettin 02-09-2014 12:47 PM
Quote:
Originally Posted by mag_black (Post 2685526)
That's not a bad idea, but most people here use a tuner and don't own a cipher cable.

I'm going in 2 months and I know others w/ uprev that have passed. We'll find out soon enough. I'll be more than prepared.
I'm curious to know how it goes for you.

rich2342 02-09-2014 01:20 PM
Quote:
Originally Posted by mag_black (Post 2685526)
That's not a bad idea, but most people here use a tuner and don't own a cipher cable.

I'm going in 2 months and I know others w/ uprev that have passed. We'll find out soon enough. I'll be more than prepared.
Are you talking in the state of MA.? When particularly?

mag_black 02-09-2014 06:35 PM
^^ yes, in MA. I have it due at the end of April. I believe Tibal is getting his inspection soon too.


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