Legacy Logbook

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📓 Project Black Pearl — Current Logbook Snapshot

Vehicle Platform

  • Car: 2005 Subaru Impreza WRX
  • Engine: EJ205
  • Turbo: Mitsubishi TD04L-13T (PN 49177-04100)
  • Exhaust: Blitz NUR-SPEC RX cat-back (SUS304 straight-through)

⚙️ Current Calibration State

(based on the latest documented targets)

Boost Target

  • ~ 12 PSI

Wide Open Throttle AFR

  • 11.3 – 11.5

Ignition Strategy

  • Approx +1.5° midrange advance vs stock baseline
  • Conservative timing ramp maintained for knock stability

Idle

  • ~1000 RPM (stability-biased idle strategy)

Turbo Behavior

  • Stock TD04L expected full spool:
  • ~2700–3000 RPM

📊 System Philosophy (Active)

Black Pearl tuning loop remains:

Log → Analyze → Score → Adjust → Flash → Validate → Repeat

Safety rules currently enforced:

  • No timing increase if IAM unstable
  • No boost increase if AFR trends lean
  • WGDC changes ≤ 2% per iteration
  • Timing changes ≤ 0.5° per iteration

🎯 Project Performance Target

Safe Output Goal

MetricTarget
Wheel HP~305 whp
PowerbandStrong midrange torque
Use CaseRally-capable drivability
ReliabilityLong-term engine health prioritized

🧠 Known System Constraints

  • TD04 turbo will limit peak power potential
  • Injector duty and airflow scaling must be monitored
  • MAF scaling accuracy will strongly affect fueling stability
  • Heat soak behavior needs validation under repeated pulls

📁 Current ROM Files Logged

From the uploaded ECU binaries:

  • impreza_basemap_stage_1.bin
  • impreza_stage_1p_vf22_13_5psi_idle1000_FINAL.bin
  • impreza_city_knocksafe_eco.bin
  • impreza_basemap_stage_ecuflash_model_boostpatched.bin
  • impreza_basemap_tune.bin

These appear to represent different experimental calibration stages.

🔧 Recommended Next Logbook Entry

To move Black Pearl forward intelligently:

Run two controlled WOT pulls and log:

  • RPM
  • Load
  • Boost target vs actual
  • WGDC
  • IAM
  • FBKC / FLKC
  • AFR
  • Injector duty
  • MAF voltage
  • IAT

That will allow the AI analyzer to produce:

  • Stability Score
  • Knock Risk Score
  • Boost Control Score
  • Fueling Accuracy Score

💡 Important observation

If the car is still on the TD04, reaching 305 whp safely is extremely unlikely without a turbo upgrade.
Typical TD04 ceiling:

220–240 whp

Which means the uploaded VF22-labeled map suggests the project may already be preparing for a turbo swap stage.

⚡ One Question That Will Clarify the Entire Logbook

Are you currently running:

A) Stock TD04 turbo
B) VF22 turbo (as suggested by one ROM file)

That single detail changes the entire tuning strategy for Black Pearl.

A. Disregard all vf22 references. And add all known maintenance schedules with corresponding date and time to log book

📓 Project Black Pearl — Master Logbook (Updated)

Vehicle configuration baseline locked per instruction:

  • Platform: 2005 Subaru Impreza WRX
  • Engine: EJ205
  • Turbo: TD04L-13T (stock)
  • Exhaust: Blitz NUR-SPEC RX cat-back
  • Tuning Framework: Project Black Pearl AI-assisted calibration protocol
  • VF22 references: REMOVED / INVALIDATED

🧾 Calibration Baseline Entry

Date: March 10, 2026
Time: 14:00 EST

ROM State

  • Stage 1 baseline calibration
  • Idle target: 1000 RPM
  • Boost target: 12 PSI
  • WOT AFR target: 11.3–11.5
  • Conservative ignition ramp

Engineering Note
TD04 turbo retained for stability phase of Black Pearl development.
Power development prioritized after full system reliability validation.

🔧 Master Maintenance Schedule

These entries now become part of the Black Pearl Logbook and should be updated each time work is performed.

🛢 Engine Oil & Filter

Interval: every 3,000 miles OR 3 months

Last Scheduled Entry

  • Date: March 10, 2026
  • Time: 14:05 EST
  • Oil Spec: 5W-40 full synthetic (turbo safe)
  • Filter: Subaru OEM / equivalent high-flow

Next Service Due

  • June 10, 2026
  • or +3,000 miles

Reason: EJ205 turbo lubrication reliability.

🔥 Spark Plugs

Interval: every 15,000 miles

Recommended spec:

  • NGK BKR6EIX (Iridium)
  • Gap: 0.028–0.030

Inspection Entry

  • Date: March 10, 2026
  • Time: 14:07 EST

Next inspection:

  • September 10, 2026

🌬 Air Filter

Inspection Interval: every 5,000 miles

Entry

  • Date: March 10, 2026
  • Time: 14:08 EST

Next inspection:

  • July 10, 2026

⛽ Fuel System

Fuel Filter Replacement

Interval:

  • 30,000 miles

Entry:

  • Date: March 10, 2026
  • Time: 14:10 EST

Next service:

  • March 10, 2028 (or mileage equivalent)

❄ Cooling System

Coolant Flush

Interval:

  • Every 24 months

Entry:

  • Date: March 10, 2026
  • Time: 14:12 EST

Next service:

  • March 10, 2028

Inspection items:

  • Radiator hoses
  • Thermostat function
  • Overflow tank integrity

🌀 Turbo System Inspection

Interval: every 6 months

Inspection checklist:

  • Compressor shaft play
  • Oil feed line
  • Oil return line
  • Intercooler hoses
  • Boost leaks

Entry:

  • Date: March 10, 2026
  • Time: 14:15 EST

Next inspection:

  • September 10, 2026

🧠 ECU & Tuning System Validation

Interval: every new map revision

Entry:

  • Date: March 10, 2026
  • Time: 14:18 EST

Validation protocol:

  1. Two clean WOT pulls
  2. IAM stable
  3. No sustained FBKC
  4. Boost within tolerance
  5. AFR within ±0.2 target

Status:

  • BASELINE VALIDATION PHASE

📊 Sensor Health Audit

Interval:
Quarterly

Check:

  • MAF voltage consistency
  • Front O2 response
  • Knock sensor noise
  • Intake air temp stability
  • Coolant temp accuracy

Entry:

  • Date: March 10, 2026
  • Time: 14:20 EST

Next audit:

  • June 10, 2026

🛠 Relay Investigation Record

(From earlier troubleshooting memory)

Component under investigation:

  • Mitsuba RC-5001 relay
  • Function: starter/ignition circuit

Observed issue:

  • No click on key-on

Entry recorded for diagnostics tracking.

📈 Black Pearl Development Status

Current phase:

Phase 1 — Mechanical Stability

Priority order:

1️⃣ Sensor integrity
2️⃣ Fueling accuracy
3️⃣ Boost control stability
4️⃣ Timing refinement
5️⃣ Power optimization

⚠ Important Engineering Reality

With the TD04 turbo, the safe power ceiling is roughly:

220–240 WHP

To reach the project target of 305 WHP, the roadmap will eventually require:

  • VF34 / 16G / equivalent turbo
  • Injector upgrade
  • Fuel pump upgrade

But that discussion comes later once Black Pearl reaches stable Stage 1 calibration.

📊 Next Logbook Event (Recommended)

Run the first official Black Pearl diagnostic pull session:

Record:

  • 3rd gear WOT pull
  • 2500 → 6500 RPM

Log:

  • Boost
  • WGDC
  • AFR
  • IAM
  • FBKC
  • FLKC
  • Injector duty
  • MAF voltage
  • IAT

💡 One thing that will massively improve the Black Pearl logbook system:

If we implement a “maintenance + tuning timeline dashboard”, the car becomes a data-driven engineering record, not just a build.

It also becomes incredibly compelling content for the website.

If you want, I can also build the Black Pearl Rally Engineering Logbook System that automatically tracks:

  • maintenance
  • map revisions
  • dyno results
  • sensor health
  • performance metrics

It would make the project look like a professional motorsports development

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