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YOUR RESEARCH02 Sensor Wire Question (Header & Hi-flow Cat Install) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Use when i had headers
Performed · outcome unconfirmed
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0
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0
Unsuccessful attempts
1
Discussions
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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.
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Performed · outcome unconfirmed
I have the whole kit I used when I had headers on my Boxster including heat shielding to cover the O2 wires.
02 Sensor Wire Question (Header & Hi-flow Cat Install) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Use when i had headers' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'solder-joints creating impedance' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Replace oxygen sensors' (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.
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
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
I used zip-ties to keep the cables away from the exhaust and attached tidy at the car undercarriage.
02 Sensor Wire Question (Header & Hi-flow Cat Install) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
solder-joints creating impedance
Suggestion or failed attempt
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Identified cause
1
Suspected cause
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Reported fixes
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 suspect a cause
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.
Suspected cause
(In fact I think I used his part numbers to order the connectors?!) Now I don't have to worry about suspect solder-joints creating impedance that throws-off the sensor.
02 Sensor Wire Question (Header & Hi-flow Cat Install) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Replace oxygen sensors
Suggestion or failed attempt
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Discussions
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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.
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
AND - I can simply replace the O2 sensor with a new one next time, rather than have to extend wires again.
02 Sensor Wire Question (Header & Hi-flow Cat Install) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Suggestion or failed attempt
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Unsuccessful attempts
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Discussions
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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 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.
02 Sensor Wire Question (Header & Hi-flow Cat Install) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Reported and suspected causes (1)
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
solder-joints creating impedance
No successful repair reported for this finding.
0
Identified cause
1
Suspected cause
0
Reported fixes
Read evidence and context
Discussions that suspect a cause
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.
Suspected cause
(In fact I think I used his part numbers to order the connectors?!) Now I don't have to worry about suspect solder-joints creating impedance that throws-off the sensor.
02 Sensor Wire Question (Header & Hi-flow Cat Install) - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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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.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi all, I just ordered a set of headers and high flow cats for my 2003 S.
I will need to extend the 02 Sensor wire a bit.
Does anyone know what gauge wire to use and any specifics would be great.
If anyone has done this before would be curious to know how it went and if you had any issues with thrown codes. Though I would imagine it could just be inaccurate readings due to the hi-cell cats (if that's the route you took)
Here's from my previously made post regarding the connectors and cable extensions.
"Here's the part numbers I used to hunt the connectors:
Bosch 1-928-403-453
Bosch 1-928-403-736
Each cable needs one of each plug.
I purchased these from UK, since I'm in Finland (no customs etc issues) - at least untill the brexit kicks in
Here's the link where I ordered those both connectors:
https://www.auto-click.co.uk/1928403453
Same can be purchased from all continents.
On top of the cables I have the white 8mm heat resistant sleeve. This size fits real well over the wires."
...and the actual post for the same:
What did you do with/to your Boxster today?
Hopefully this is helpful
Also, here's the link to post I did after installing the cable extensions and having driven a bit:
http://986forum.com/forums/615597-post5643.html
Thanks for replying.
Why would you need new connectors though? I've seen a video where the cable was cut and a wire was joined somewhere in the middle to make the desired length.
I do like the clean look of your finished cables though - they look great!
I think I understand now what you did. For each connector that you made, one end clips to the clip end of the 02 sensor and then the other end to the car. Is that correct?
If so I never thought of it that way as I always imagined the wires had to be cut and spliced in hence my confusion.
When I first did mine, I simply cut-n-spliced the wires on the o2 sensors to lengthen them. That was all fine-n-dandy until I had a sensor fail, and then the next sensor I put in was either bad out of the box (it was a Bosch, so unlikely) or i damaged it when extending the wires.
So I built the extension cables, the way pilot4fun did. (In fact I think I used his part numbers to order the connectors?!) Now I don't have to worry about suspect solder-joints creating impedance that throws-off the sensor. AND - I can simply replace the O2 sensor with a new one next time, rather than have to extend wires again.
It's worth it, in my opinion, to do the extension cables the first time.
Agreed. At first I couldn't wrap my head around it based on the picture he sent and then it just clicked. One of THOSE days I guess.
I like this idea much better as the sensors don't get butchered and can be swapped out easily.
The only picture I have of the install is from the after cat where you can see the black cable of OEM O2 sensor going up and connecting to extension plug (far-) behind the exhaust hanger on here.
I used zip-ties to keep the cables away from the exhaust and attached tidy at the car undercarriage.
Looks good. I am convinced this is the right way now. Only issue is that 1-928-403-453 seems to be on backorder from the sites i've visited. Still searching...
Well check out what I've got sitting in my garage..
Send me a pm, we'll figure out how to get them to YOUR garage....
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