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P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

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YOUR RESEARCHP0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Leading reported evidence

Run softronic tune specifically

Performed · outcome unconfirmed

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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
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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 have Durametric and I am running the Softronic tune specifically for the conversion.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?
Frequently discussed work

Check anything

No successful repair reported for this finding.

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Reported fixes
0
Unsuccessful attempts
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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.

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

Suggestion

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?
Read full discussion summary

Leading evidence: 'Run softronic tune specifically' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check anything' (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 · 2 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Check anything

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Check mass air flow sensor

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Check vacuum leaks, i

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Clean tb and since

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?
Frequently discussed actions (10)

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

Check anything

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Check mass air flow sensor

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Check vacuum leaks, i

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Clean tb and since

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Disconnect from the tb

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

However about a week after we had things dialed in, (after realizing the car was not optimized due to tune being geared to sea level...) With new tune and amazing throttle response, I had the induction air tube disconnect from the TB when I was driving and from that point forward, after reconnecting the car simply didn't feel as crisp or responsive.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Reconnect car simply didn't feel as crisp or responsive

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

However about a week after we had things dialed in, (after realizing the car was not optimized due to tune being geared to sea level...) With new tune and amazing throttle response, I had the induction air tube disconnect from the TB when I was driving and from that point forward, after reconnecting the car simply didn't feel as crisp or responsive.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Replace plugs and coil packs

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

I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Run 3.6

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

Where would one go to compare loggings of all engine parameters to compare to an optimally running 3.6?

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Run scans and log if someone might be willing

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

I can run scans and log if someone might be willing to assist me with interpretation.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?

Run softronic tune specifically

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

I have Durametric and I am running the Softronic tune specifically for the conversion.

P0660 codes on 3.6L 986S conversion--where does one look, and would this cause lazy throttle response?
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.

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

  • Planet-9: 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: 20261027T031046Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Anyone wanna help a poor guy out? As a 50 year long P-car enthusiast, I am pretty facile with these cars in general. I still have my 73 911 and only got the 986 because I still wanted to track something and my son had an early Box and I made the mistake of driving. This car is about 90% right and I recently found the P0660 code with out a CEL coming on. Shocked to find there is nothing about this on most of the forums outside of what it does or means. Any pictures or diagrams of where I would look for how to address the P0660 code on my porsche 986 M96 engine? I would be much obliged and any help greatly appreciated. This conversion was done in about 2016 and I've been mostly happy. Initially, throttle response was super crisp and I was very happy. I have Durametric and I am running the Softronic tune specifically for the conversion. Of note, we had to go back and tweak tune because the car lives in the mountains at 7500'. Scott, says once the tune is in the ecu, it cannot escape. However about a week after we had things dialed in, (after realizing the car was not optimized due to tune being geared to sea level...) With new tune and amazing throttle response, I had the induction air tube disconnect from the TB when I was driving and from that point forward, after reconnecting the car simply didn't feel as crisp or responsive. Back then, I had the ability to reload the tune as often as I wished--but this has now changed because Scott no longer supports the tune as a stand-alone file on my computer. I was methodic in checking for vacuum leaks, I checked MAF, checked anything that could have come unplugged, cleaned TB and since then (10K miles), changed plugs and coil packs. My butt dyno tells me the car runs fine (no surging, pops off ea start, pulls to redline without fail, no smoke, smell, etc...) but it still feels soft and the motor was a low mileage 3.6 with compression tests provide (and verified) that were excellent. It runs like the 3.2 did prior. It burns no oil nor coolant. When I go to blip, throttle, it is lazy. It almost seems as though we lost the altitude tune. This weekend I hooked up the Durametric for 1st time in years and low and behold there was the P0660 which I never saw before --so I have no idea how long it has been there. The car idles perfectly and RPM's drop once warm like they should. Where would one go to compare loggings of all engine parameters to compare to an optimally running 3.6? I only know some basics. I can run scans and log if someone might be willing to assist me with interpretation. Calls and emails to Scott have not been returned.

POST 2Original post

See your other post for some possible answers..

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