Engine
Misfires, cooling, oil, noises, diagnostics.
10 threads
E63 W213: Misfire under load after spark plug change — what did we miss?
Changed plugs recently and now under load there’s a noticeable stumble. No constant CEL yet. What would you check firs...
Oil temp runs hot on spirited drives — what’s “normal” and what’s not?
On hard road driving I see oil temps rising faster than expected. What temps do you consider safe long-term? Any real s...
Turbo heat soak: how to reduce it in daily use?
Opening discussion: Turbo heat soak: how to reduce it in daily use? Share your real experience, diagnostics steps, or ...
Fuel quality differences: real impact on performance engines
Opening discussion: Fuel quality differences: real impact on performance engines Share your real experience, diagnosti...
Oil analysis reports: worth doing or overkill?
Opening discussion: Oil analysis reports: worth doing or overkill? Share your real experience, diagnostics steps, or p...
Cold start noises: when to worry?
Opening discussion: Cold start noises: when to worry? Share your real experience, diagnostics steps, or practical chec...
Oil choice debate: 5W-40 vs 0W-40 for performance daily
Opening discussion: Oil choice debate: 5W-40 vs 0W-40 for performance daily Share your real experience, diagnostics st...
Intercooler upgrades: noticeable or placebo?
Opening discussion: Intercooler upgrades: noticeable or placebo? Share your real experience, diagnostics steps, or pra...
PCV / breather system issues: symptoms and fixes
Opening discussion: PCV / breather system issues: symptoms and fixes Share your real experience, diagnostics steps, or...
Best practice: warm-up routines that actually matter
Opening discussion: Best practice: warm-up routines that actually matter Share your real experience, diagnostics steps...