Planet-9

Upgrading 987's TPC turbocharger from stage 1 to stage 2?

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YOUR RESEARCHUpgrading 987's TPC turbocharger from stage 1 to stage 2?

Leading reported evidence

Install tpc turbo

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Unsuccessful attempts: 1
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Discussions that performed work without a confirmed outcome: 1

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Performed · outcome unconfirmed
A previous owner installed a TPC turbo.
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Upgrading 987's TPC turbocharger from stage 1 to stage 2?

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Leading evidence: 'Install tpc turbo' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install tpc turbo' (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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1 matching discussions · 2 captured posts examined · 1 partial discussions

Frequently discussed actions (1)

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Install tpc turbo

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
A previous owner installed a TPC turbo.
Original post Read captured discussion
Upgrading 987's TPC turbocharger from stage 1 to stage 2?

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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.

Planet-9: 1 discussions

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Generation: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

Hi! A previous owner installed a TPC turbo. I have no details or contact with the previous owner. Slakker Racing dyno'd it and it's making 355 hp at the wheels. I can hardly find any details online about the 987.1S TPC turbo stages, but I may be interested in upgading to stage 2 if it's cheap enough (I saw someone else's dyno where it made 408 whp). Does anyone know any details about the stage 1 kit? I can't even find it online at all. And, has anyone upgraded from stage 1 to stage 2? Was it hard, how much did it cost, which parts were involved, and where did you get the parts?

POST 2Original post

In case anyone else is investigating it, I got these numbers by emailing TPC: TPC 987.1 liquor-to-air intercooler, electric pump, pump harness, coolant hoses, silicone boost hoses $3365. TPC 987.1 ECU flash $1600. OEM center radiator kit $925 (available from various internet sources and your local Porsche dealer). Optional TPC blow-off valve kit $595. Though it turns out the only major difference from stage 1 and 2 is cooling improvements. And I already have stage 2 it turns out so... haha. I didn't find this documented anywhere. Per Slakker Racing Dev, the reason for the low numbers is probably my turbo needing to be rebuilt.

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