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Now Available: Agency Power Headers! All 996/997!

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHNow Available: Agency Power Headers! All 996/997!

Leading reported evidence

Test the headers made almost 5 wheel horsepower

Suggestion or failed attempt

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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
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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.

Suggestion · Original poster

During dyno testing, the headers made almost 5 wheel horsepower.

Now Available: Agency Power Headers! All 996/997!
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Leading evidence: 'Test the headers made almost 5 wheel horsepower' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test the headers made almost 5 wheel horsepower' (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 · 0 partial discussions

Compare 2 other evidence results

Use 321 instead of 304

Suggestion or failed attempt

No successful repair reported for this finding.

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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

Nice to see someone finaly use 321 instead of 304.

Now Available: Agency Power Headers! All 996/997!

Use factory gaskets and hardware

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 · Original poster

Headers use all factory gaskets and hardware for installation.

Now Available: Agency Power Headers! All 996/997!
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.

Test the headers made almost 5 wheel horsepower

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 · Original poster

During dyno testing, the headers made almost 5 wheel horsepower.

Now Available: Agency Power Headers! All 996/997!

Use 321 instead of 304

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

Nice to see someone finaly use 321 instead of 304.

Now Available: Agency Power Headers! All 996/997!

Use factory gaskets and hardware

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 · Original poster

Headers use all factory gaskets and hardware for installation.

Now Available: Agency Power Headers! All 996/997!
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.

  • 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: 20261026T155324Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Agency Power, which has provided the Porsche community with quality suspension products in the past has now shifted its focus to power. Just released are stainless steel headers for the 996 and 997. Attached is a description of the headers as well as AP's dyno results, which despite being modest, are gains non-the less. I am very excited to try out this product for myself but AP hasn't dissapointed me, so i don't doubt that the gains from this exhaust is inline with other manufacturers, but at a lower price! The one thing that i can't see in the photos are the merge collectors, and I have asked AP to send me some photos or a diagram which show these. Description: Improving upon designs, R&D, and delivering a quality product to the market is what Agency Power has continually done. Developing yet another high quality product for the Porsche vehicle, Agency Power has released their Porsche 996/997 performance header kit. These headers are 321stainless steel. Each headers is fully polished with amazing robotic welds. The headers have very strong and precision cut � inch flanges. The Agency Power headers mount and fit to the factory cat pipes or aftermarket ones. Agency Power designed the headers to change the sound of the Porsche, increase air flow, and improve horsepower. During dyno testing, the headers made almost 5 wheel horsepower. On a Normally Aspirated 996 or 997, this is about average gains for a header kit. Every bit helps and this product is priced and tested to give you that extra advantage. Headers fit all 996 and 997 models from 99 and up. Headers can also fit the 996 GT3. Headers use all factory gaskets and hardware for installation.

POST 2Original post

Nice to see someone finaly use 321 instead of 304. A much better choice.

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