Pelican Parts

GT3 wont pass smog

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6 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHGT3 wont pass smog

Leading reported evidence

Clean sensor the airflow/ gas mix was within spec

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed · Original poster
the air / fuel ratios were all over the tester very lean / very rich no leaks in the air injection system, crank case pressure correct we looked at the mass air flow it was caked with oily grease, we cleaned the sensor the airflow/ gas mix was within spec
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GT3 wont pass smog

Frequently discussed work

Check these yourself

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Suggestion
You can get a simple odbii reader and check these yourself.
Original post Read captured discussion
GT3 wont pass smog

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Leading evidence: 'Clean sensor the airflow/ gas mix was within spec' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check these yourself' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Check these yourself

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Suggestion
You can get a simple odbii reader and check these yourself.
Original post Read captured discussion
GT3 wont pass smog

Set disabled

Suggestion or failed attempt

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Discussions that contain suggestions: 1

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Suggestion
It would pass with a tune unless your OEM indicators are set disabled.
Original post Read captured discussion
GT3 wont pass smog

Frequently discussed actions (3)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check these yourself

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
You can get a simple odbii reader and check these yourself.
Original post Read captured discussion
GT3 wont pass smog

Clean sensor the airflow/ gas mix was within spec

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
the air / fuel ratios were all over the tester very lean / very rich no leaks in the air injection system, crank case pressure correct we looked at the mass air flow it was caked with oily grease, we cleaned the sensor the airflow/ gas mix was within spec
Original post Read captured discussion
GT3 wont pass smog

Set disabled

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
It would pass with a tune unless your OEM indicators are set disabled.
Original post Read captured discussion
GT3 wont pass smog

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

6 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Pelican Parts: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

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Generation: 20261026T142254Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Is it true what I've hears about remapping an ECU that it can cause a car to not pass due to a number of reasons. It's a GT3 2004 I've tried a the full exhaust change etc.....

POST 2Original post

Quotes source post: 10660723

Yes. Some re-flashes are worse than others in this respect.

POST 3Original post

The re-mapping is for sure guilty , if there is no lambda defaults on the piwi.

POST 4Original post

can you reflash back to stock? that's what i do on my 996tt every 2 years... reflash to stock>>drive ~100mi>>get smogged>>reflash back to tune.

POST 5Original post

It would pass with a tune unless your OEM indicators are set disabled. Typically tunes will disable check for o2 sensors and if those are inactive it will fail smog. My 997rs i have a Cobb and can go back to stock easily even though the standard tune keeps o2 enabled and will pass fine. You can get a simple odbii reader and check these yourself.

POST 6 / ORIGINAL POSTEROriginal post

After 1.5 years 2 PORSHE dealers a very good tech I know found why the monitors for the cats wouldn't set the air / fuel ratios were all over the tester very lean / very rich no leaks in the air injection system, crank case pressure correct we looked at the mass air flow it was caked with oily grease, we cleaned the sensor the airflow/ gas mix was within spec i'm just in amazement the PORSCHE tech couldn't find it. I'm not baggen on the Dealers but process of elimination right?? And the length of time and the $$$$$$ Well any way we did re flash the ECU back to stock, and as I'm told the ECU was chasing the bad AFM as best it could, not good enough to pass smog. Thanks for all your ideas they helped!!!

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