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Engine performance briefing
Needs attentionBoost missed the effective target while wastegate duty was high in 2 of 2 usable pulls. The logs support a boost-control or pressurized-air-path limitation, not a failed-part diagnosis.
Do this next
Avoid increasing load. Pressure-test the charge tract and inspect couplers, clamps, diverter or bypass valves, and vacuum lines. If the tract is sealed, inspect wastegate or actuator control before retesting.
What can wait
Timing and intake temperature observations are context only and do not independently require action in the evidence reviewed.
Stop / retest gate
Stop: do not repeat a full-load pull until the charge tract and boost-control hardware have been inspected. Retest with the same logger/platform, map, fuel, and similar gear/load. Reassess when target tracking improves without the same excessive wastegate-duty pattern.
2 usable pulls reviewed · repeated in 2 of 2 · medium confidence
This is not an all-clear for overall engine condition. It reflects only the supported channels and usable pull evidence reviewed.
Grouped by pattern. Open evidence for per-pull values and limits.
warning · boost · medium confidence
Observed: Run 1: boost was 3 psi below the effective target at the 75th percentile of comparable samples while wastegate duty reached 90%. Run 2: boost was 3.6 psi below the effective target at the 75th percentile of comparable samples while wastegate duty reached 90%.
Interpretation: This pattern is consistent with a pressurized-air leak or boost-control limitation, but it does not identify the failed part.
Next step: Avoid increasing load. Pressure-test the charge tract and inspect couplers, clamps, diverter or bypass valves, and vacuum lines. If the tract is sealed, inspect wastegate or actuator control before retesting.
info · temps · high confidence
Observed: Run 1: intake temperature increased 32°F during the pull (peak 132°F).
Interpretation: The rise adds thermal context; this log does not prove heat soak as the cause of another signal.
info · timing · low confidence
Observed: Run 1: aggregate timing changed from 13° to 7° near 5,342 rpm (6° decrease).
Interpretation: The cause is not determined from aggregate timing alone; shift context is excluded, but load changes and ECU torque control remain alternatives.
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