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NHP cat bypass pipes

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

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHNHP cat bypass pipes

Leading reported evidence

Adjust fueling so having

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

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 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
The ECM uses the data from the downstream O2 sensor to adjust fueling so having then lifted out of the exhaust stream to try to keep the CEL off is not good.
Original post Read captured discussion
NHP cat bypass pipes

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Leading evidence: 'Adjust fueling so having' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust fueling so having' (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.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 5 captured posts examined · 0 partial discussions

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Use data

Suggestion or failed attempt

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
The ECM uses the data from the downstream O2 sensor to adjust fueling so having then lifted out of the exhaust stream to try to keep the CEL off is not good.
Original post Read captured discussion
NHP cat bypass pipes

Frequently discussed actions (2)

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

Adjust fueling so having

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
The ECM uses the data from the downstream O2 sensor to adjust fueling so having then lifted out of the exhaust stream to try to keep the CEL off is not good.
Original post Read captured discussion
NHP cat bypass pipes

Use data

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
The ECM uses the data from the downstream O2 sensor to adjust fueling so having then lifted out of the exhaust stream to try to keep the CEL off is not good.
Original post Read captured discussion
NHP cat bypass pipes

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.

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

Rennlist: 1 discussions

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

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261026T234245Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm selling mine. Here's the eBay link: https://www.ebay.com/itm/264740913943 These are in really good condition and have the optional downstream oxygen sensor bungs, so you don't get engine codes.

POST 2Original post

Quotes source post: 16650907

I had NHP cat by-pass pipes and they were good quality and fit. But with cat by-pass pipes you will get a CEL code, regardless of O2 sensor bungs. GLWS.

POST 3Original post

The ECM uses the data from the downstream O2 sensor to adjust fueling so having then lifted out of the exhaust stream to try to keep the CEL off is not good.

POST 4Original post

[QUOTE=Sula;16650907]I'm selling mine. Here's the eBay link: https://www.ebay.com/itm/264740913943 Did you end up selling them? I am looking for a pair they are discontinued.

POST 5Original post

Quotes source post: 16651514

Did you purchase the pipes with the o2 bungs? They are supposed to prevent a CEL

This is a source reference. Confirm exact model applicability in the original material.