Observed arrival · 2026-10-26
Horsepower, one 720° cycle at a time
An interactive engine simulator models power and torque from crank-angle gas dynamics, with intake and exhaust tuning, turbo modeling, VE tables, and dyno comparison.
- For
- Engine tuners and builders exploring engine behavior
- Worth noticing
- The MBT table estimates spark timing for best torque but explicitly ignores knock, a critical real-world limit.
Field notes
The model description traces several mechanisms rather than relying on correction tables: valve flow can choke at sonic speed, while intake runners and headers are treated as one-dimensional pipes with traveling pressure waves. Dyno comparisons accept pasted or uploaded data, with controls for power and torque units and drivetrain loss. The site cautions that its theoretical MBT estimates ignore knock and that its light-load advance estimate is limited.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue