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EBAY Headers Question

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16 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
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YOUR RESEARCHEBAY Headers Question

Leading reported evidence

Install on my car

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Performed · outcome unconfirmed

I Currently have eBay headers installed on my car.

EBAY Headers Question
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Leading evidence: 'Install on my car' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'bit of gain' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Install on my car' (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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bit of gain

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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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Suspected cause

My but dunno says there's definitely no low end torque loss, and probably a bit of gain....

EBAY Headers Question

Use two gaskets

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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Suggestion

Sometimes they bolt right up; the pair I got for my Boxster were fine but another guy's were so warped that he had to use two gaskets to get them to seal.

EBAY Headers Question
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.

Install on my car

No successful repair reported for this finding.

0
Reported fixes
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Unsuccessful attempts
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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 Currently have eBay headers installed on my car.

EBAY Headers Question

Use two gaskets

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

Sometimes they bolt right up; the pair I got for my Boxster were fine but another guy's were so warped that he had to use two gaskets to get them to seal.

EBAY Headers Question
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.

bit of gain

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

My but dunno says there's definitely no low end torque loss, and probably a bit of gain....

EBAY Headers Question
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.

16 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: 20261027T201111Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Gents, My son sent this to me, I was wondering if anyone ever used these type of Headers - Cheap Price, just not sure if the product is cheap as well - http://www.ebay.com/itm/171061801929?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

POST 2Original post

It's already been dyno'ed at a ~10hp loss. Someone documented it awhile ago.

POST 3Original post

Headers are not a component you want to cheap out on. Porsche OEM exhaust system is one of the best ever designed. Yes it's crazy expensive, but it works and stays working for a long time.

POST 4Original post

Those M96 eBay headers...sometimes they're fine; sometimes the collectors are so full of weld slag they can't possibly flow well. Sometimes they bolt right up; the pair I got for my Boxster were fine but another guy's were so warped that he had to use two gaskets to get them to seal. The ARE cheap in all interpretations - I guess on the plus side cheap headers are one of the least expensive ways to reduce horsepower on the M96. If the goal is a louder yet slower car, these are definitely a good choice.

POST 5Original post

If you want a bargain and yet a solidly designed header, head to eBay for 997S stock headers. bolt up nicely to the 996.

POST 6 / ORIGINAL POSTEROriginal post

Awesome, thanks all, Trust me I had no intentions of buying them, just thought I ask :-)

POST 7Original post

I wouldn't fault you for buying them. Almost every car person I know has tried ebay headers. Once.

POST 8Original post

To parrot what everyone else is saying... Although the factory headers on these cars don't look like they'd be very efficient or good for making power, they are the best design you're going to find. The only real upgrade is 997S headers.

POST 9Original post

997s like this one are bolt-on on our 3.6L? http://www.ebay.com/itm/221901207299 Seems like an affortable upgrade

POST 10Original post

Indeed! I have them on my car right now. I just finished a head rebuild/IMS Solution install on my car so I have been keeping the revs under 3.5k, but they seem very nice and provide a different tone. My but dunno says there's definitely no low end torque loss, and probably a bit of gain.... Once i get more revs/ miles on them, I'll let you know further impressions. In my "flashing check engine light thread" I have a post where I have the 997S headers polished up. They look good too!

POST 11Original post

I Currently have eBay headers installed on my car. Im probably going to change them back to stock since the loss in horsepower is documented. They definitely look nice. Can any engineer here provide some logic as to what the best Header solution for the M96 engine would be? Why do the eBay headers that are identical to the Fabspeed headers loose HP? Do the fabspeed headers lose HP also?

POST 12Original post

I've not had a set of ebay Porsche headers, but I have had them for another car. No inner welds were ground down, the collectors looked like a welding student had played around with old rods inside it. Any complex bends meant 2 piece primaries instead of 1. Most junctions are overlapped instead of like tubing butted against each other. Most of this stuff sounds trivial, but its the difference between a quality product and a cheaply made copy.

POST 13Original post

The design of my headers is much like the ebay models. 3 into 1 coupler. Sounds great but I also believe they've cost both hp and tq. Looking at X51 headers as the solution

POST 14Original post

These are nice looking X-51 based headers. http://www.maxspeed-motorsports.com/..._Headers_.html

POST 15Original post

Quotes source post: 13579577

These look fantastic. Will be making a few calls. Thanks!

POST 16Original post

Quotes source post: 13579577

The tubes are a bit too big for any mildly modified m96 and will shift the powerband all the way to the high side. You will lose a decent amount of low end with the NHP X51 reps. This has also been documented as well. 997S are a good compromise.

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