fullymatted.
Back to search
Rennlist

Supercharged 996 C4S

Add to repair workspace
Open repair workspace
Original source
5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHSupercharged 996 C4S

Leading reported evidence

Install roughly 2 years ago, along

Performed · outcome unconfirmed

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 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 · Original poster

The car has only 44K miles and includes several modifications � most of which I wasn�t specifically looking for � such as a VF supercharger kit installed roughly 2 years ago, along with KW V3 coilovers, upgraded sway bars, a new head unit, an IMS bearing upgrade, and a new clutch.

Supercharged 996 C4S
Read full discussion summary

Leading evidence: 'Install roughly 2 years ago, along' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'person' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Install roughly 2 years ago, along' (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.

Read captured replies

1 matching discussions · 5 captured posts examined · 0 partial discussions

Compare 2 other evidence results

person

Suggestion or failed attempt

No successful repair reported for this finding.

0
Identified cause
1
Suspected cause
0
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

"Redridge" was probably the person that was active here the longest.

Supercharged 996 C4S

Use search function

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

If you use the search function to look for other members here that have had the Vortech supercharger on their 996, you will find that lots of guys had that system on their 996.

Supercharged 996 C4S
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 roughly 2 years ago, along

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 · Original poster

The car has only 44K miles and includes several modifications � most of which I wasn�t specifically looking for � such as a VF supercharger kit installed roughly 2 years ago, along with KW V3 coilovers, upgraded sway bars, a new head unit, an IMS bearing upgrade, and a new clutch.

Supercharged 996 C4S

Use search function

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

If you use the search function to look for other members here that have had the Vortech supercharger on their 996, you will find that lots of guys had that system on their 996.

Supercharged 996 C4S
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.

person

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

"Redridge" was probably the person that was active here the longest.

Supercharged 996 C4S
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.

5 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: 20261026T150451Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hello everyone! I recently had the opportunity to purchase a 2004 996 C4S at a fair price (around ~$45K). The car has only 44K miles and includes several modifications � most of which I wasn�t specifically looking for � such as a VF supercharger kit installed roughly 2 years ago, along with KW V3 coilovers, upgraded sway bars, a new head unit, an IMS bearing upgrade, and a new clutch. Altogether, the upgrades likely total more than $20K. My concern, and the purpose of this post, is understanding what I should take into account regarding the supercharger. I�ve read in many places that increasing engine power can accelerate issues like bore scoring, which is a known concern for the 996. My first priority is to verify whether there is any existing bore scoring. From there, I�m unsure whether I should keep the supercharger or revert the engine back to its naturally aspirated setup. If I decide to remove the supercharger kit, what would I be looking at in terms of cost and potential complications? Adding a picture a great visual. Appreciate any feedback in advance. Thank you all.

POST 2Original post

Congratulations on your Porsche. It looks fantastic. If you use the search function to look for other members here that have had the Vortech supercharger on their 996, you will find that lots of guys had that system on their 996. Back when our cars were newish, it was a popular modification. There were several members that tracked their 996 with the Vortech system. "Redridge" was probably the person that was active here the longest. We didn't get the GT3 (in the USA) until 2004. Guys that tracked their cars and wanted more power didn't have the GT3 as an option. The owner of Evolution Motorsports installed one on his 996. It was featured in several magazines, back in the day.

POST 3 / ORIGINAL POSTEROriginal post

Thank you very much Ellogt40 for this feedback. It was pretty useful, I will go ahead with the inspection of the car overall, borescope it and oil analysis, I am not sure about the running running lean. I have some results of the dyno on this car... I am not sure if that is what you are referring to, but this was on August 2023.

POST 4Original post

I have a vf engineering supercharger kit on my bmw. It�s maniacal when it needs to be and calm when it needs to be. Runs a tad rich though out of the box. I�ve considered a vf kit for my 4.0 996 engine..but not seriously.

POST 5Original post

Car looks amazing! The color combo is perfect! Looking at the chart and it's making great power!!! I would leave the supercharger on it because once you remove it you'll wish you hadn't. These cars stock are slow and from the dyno chart yours is an animal!

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