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HPDE - driving a C4 vs a C2 on the track

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHHPDE - driving a C4 vs a C2 on the track

Leading reported evidence

Replace fluids

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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: 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
I re-did the suspension with new shocks control arms, tie rod ends, sway bar bushings, coffin arms, etc., and replaced the front Diff seals, added a short shift kit, and changed all the fluids.
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HPDE - driving a C4 vs a C2 on the track

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Leading evidence: 'Replace fluids' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace fluids' (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 1 other evidence results

Replace front diff seals, added a short shift kit

Performed · outcome unconfirmed

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
I re-did the suspension with new shocks control arms, tie rod ends, sway bar bushings, coffin arms, etc., and replaced the front Diff seals, added a short shift kit, and changed all the fluids.
Original post Read captured discussion
HPDE - driving a C4 vs a C2 on the track

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.

Replace fluids

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
I re-did the suspension with new shocks control arms, tie rod ends, sway bar bushings, coffin arms, etc., and replaced the front Diff seals, added a short shift kit, and changed all the fluids.
Original post Read captured discussion
HPDE - driving a C4 vs a C2 on the track

Replace front diff seals, added a short shift kit

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
I re-did the suspension with new shocks control arms, tie rod ends, sway bar bushings, coffin arms, etc., and replaced the front Diff seals, added a short shift kit, and changed all the fluids.
Original post Read captured discussion
HPDE - driving a C4 vs a C2 on the track

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: 20261027T035758Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

In August last year I bought a 2001 C4 manual. I re-did the suspension with new shocks control arms, tie rod ends, sway bar bushings, coffin arms, etc., and replaced the front Diff seals, added a short shift kit, and changed all the fluids. Car feels great and I like the way the C4 stays flat when you hit the gas vs the rear drop in my previous C2 996 and 997's. I have done 15 or so HPDE track days, up to being a BLUE driver. I am wondering if I need to drive this car differently than I did the RWD cars. Any advice is appreciated.

POST 2Original post

I haven't tracked a C4 specifically, but every car boils down to the same thing - find the tire limits then work around them. If you haven't understeered or oversteered off the corner entry yet, keep trying to enter faster till it happens. Make a mental note of how hard you were trying to do things, then next lap back it off a tick. If understeer, trail brake more. If oversteer, trail brake less. Once you can dance on the limit from entry to apex, then you try to get to WOT earlier and earlier until you plow or slide off the exit. Rinse and repeat around the whole course.

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