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YOUR RESEARCHX51 kit for $2k?
Leading reported evidence
Install on a us version 996
Performed · outcome unconfirmed
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1
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Read evidence and context
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Performed · outcome unconfirmed
Remember the original X51 upgrade for the 3.4L engine cannot be installed on a US version 996 because the X51 heads do not have the Secondary air injection ports.
Leading evidence: 'Install on a us version 996' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install on a us version 996' (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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Install on a us version 996
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
Remember the original X51 upgrade for the 3.4L engine cannot be installed on a US version 996 because the X51 heads do not have the Secondary air injection ports.
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.
11 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: 20261026T091943Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
X51 kit for which model year and engine?
What does the "kit" consist of?
The price seems extremely cheap and tread with care.
Remember the original X51 upgrade for the 3.4L engine cannot be installed on a US version 996 because the X51 heads do not have the Secondary air injection ports.
I have not researched the 3.6L X51 kit to see what that is yet.
Ciao,
Adrian.
That would be a very very good price for a 3.6L X51. I don't remember what I paid but I recall that it was $6-8k. It should consist of heads, intake manafold, cams, headers, oiling kit, etc. Obviously installation is a pretty big deal.
Jim
Yeah I forgot that.
Mind you we are still waiting for some details on this kit.
For 2K I cannot believe it is complete regardless of what it's for, unless it's off a wrecked engine.
Ciao,
Adrian.
I found it on
http://www.fvdusa.com/
Upgrade X51 engine (Raises power output to 381 HP) FVD 996 100 X51
Price: $2,000
MSRP: $2,970
Mod. 996 C4S 3.6 / C4 3.6 / C2 3.6 / C4 3.4 / C2 3.4
Maybe it's an upgrade for X51 engines and not the actual X51 kit?
Yea, it looks to be an upgrade to existing X51 engines. I'd guess those numbers are optimistic and I don't see how they can apply to both the 3.4 and 3.6 but who knows.
This is NOT a X51 kit for 2K. This is a mod kit for an existing X51 engine. To be honest I think this is a mod kit for their own X51 kit versions rather than the Porsche kitted engines. The original 3.4L X51 kit only provided 320hp.
It will cost you over 10K (nearly 11K for the 3.6L) before you can even use this upgrade.
Somehow I don't believe their figures showing a 335hp to 381hp increase for the 3.4L engine for just 2K either.
350 to 381hp for the 3.6L is also a stretch for the price.
Ciao,
Adrian.
Exactly, this is a part number for our 3.8L Engine Conversion into 996's and Boxsters to upgrade from a regular 3.8L being put in to an X51 motor being put in. Believe it or not thats how much extra an X51 motor costs from Porsche despite what they charge you guys as an option when you buy the car new!
Regards,
Evan (FVD)
This is a source reference. Confirm exact model applicability in the original material.
