Demo Report — N54 BMW 335i Analysis
Demo Report
This is a demo report showing a classic N54 HPFP failure pattern. The high-pressure fuel pump can't maintain pressure under load — the #1 failure mode on the N54 platform.
2008 BMW 335i
Feb 28, 2026, 4:12 PM
Scored for N54 · HPFP Failure
Critical safety condition detected. Do not drive under load until investigated.
WOT Pulls
3 detected3rd
9.5s
3154-6800
11.7 psi
3rd
9.5s
3154-6800
11.1 psi
3rd
9.5s
3154-6800
11.7 psi
Load Intensity
70/100 · HardThis log captured 3 sustained WOT pulls with significant load. The engine was pushed hard — scores above 60 indicate a demanding session.
Cross-Category Insights
Compound: fuel starvation causing knock cascade
This is the classic N54 death spiral — the HPFP fails, fuel pressure collapses, the mixture goes lean, knock sensors go off, and the DME pulls timing trying to save the engine. All three conditions are present in this log. The root cause is the fuel pump — fix that and the knock and lean conditions will resolve. Do not drive this car hard until the HPFP is replaced.
Category Breakdown
Score Ceilings Applied
Safety-critical findings cap your maximum achievable score. Resolve these issues to unlock a higher rating.
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Generated by TBK Logs — tbk-logs.com
This report is generated from datalog analysis and is not a substitute for professional mechanical inspection.