Power, decoded.
Explore machines. Make sense of data.
Learn the engineering behind powerful engines and racing machines. Analyze your recorded sensor data. Follow the details that make performance possible.
Learn / Analyze / Explore
The TorqueGirl index
Curiosity starts here.
From a clear explanation to a closer look at your own data. Choose the question that brings you here.
TorqueGirl Tools / Local analysis
Your drive. Your data. A clearer picture.
Open the OBD2 Log Analyzer to inspect synchronized signals, recording quality and driving phases. Compare Run A and Run B, or try the synthetic demo and first-use guide. Save observations and next tests in the local notebook; saved notes do not restore logs or an analysis session.
Find patterns first. Diagnose second.
Learn to read live dataTorque-Power Explorer
Calculate torque or power at an RPM. Plot supplied samples, inspect the numbers and see why sampled torque and power peaks can differ. Use the synthetic sample to explore the relationship, with no actual engine prediction.
Open Torque-Power ExplorerLatest stories
Fresh from TorqueGirl.
The newest published stories across engineering, technology and Off Track.
How to Record and Export OBD2 Logs
Prepare a useful OBD2 recording: choose channels, capture safe operating context, preserve timestamps and units, and export a log for local analysis.
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Off Track: Torque Girl’s Golf Day
Torque Girl steps away from machines for a day on the golf course—a short story about curiosity, focus, learning and enjoying something new.
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How to Analyze OBD2 Live Data and Logs
Learn how to record and read OBD2 live-data logs, compare RPM, throttle, fuel trims, coolant and oxygen-sensor data, and find useful patterns without jumping to conclusions.
Read the storyWhat we explore
The difference is in the details.
TorqueGirl is a field guide to the choices, compromises and clever solutions inside extraordinary machines.
Featured machine
How a NASCAR V8 Engine Works
Explore how a NASCAR-style V8 racing engine works, from airflow and combustion to torque, cooling, lubrication and race-ready durability.
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Boost explained
Turbocharger vs Supercharger: What’s the Difference?
Learn how turbochargers and superchargers work, where their driving energy comes from, and how boost, response, heat and efficiency differ.
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Engine legends
Toyota 2JZ-GTE: Why This 30-Year-Old Engine Is Still a Tuning Legend
Discover the engineering, durability, tuning headroom and Supra connection that made Toyota's 2JZ-GTE a lasting performance legend.
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Technology
How a Formula 1 Car Creates Downforce
Learn how Formula 1 cars use wings, ground-effect floors, diffusers and aerodynamic balance to turn airflow into cornering performance.
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Garage technology
What Is an OBD2 Scanner? A Beginner’s Guide to Diagnosing Your Car
Learn what an OBD2 scanner does, where it plugs in, how diagnostic trouble codes work, and how to use scan data without guessing at parts.
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Diagnostic tools
OBD2 Scanner vs Code Reader: What’s the Difference?
Compare a basic OBD2 code reader with an advanced scan tool, from generic trouble codes and live data to ABS, SRS, service functions, and bidirectional controls.
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Diagnostic codes
How to Read OBD2 Codes: P, B, C and U Codes Explained
Learn how to read OBD2 diagnostic trouble codes, understand P, B, C and U code families, and use code information as the beginning of diagnosis—not a parts list.
Read the storyLive data / diagnostic workflow
How to Analyze OBD2 Live Data and Logs
Learn how to record and read OBD2 live-data logs, compare RPM, throttle, fuel trims, coolant and oxygen-sensor data, and find useful patterns without jumping to conclusions.
Read the storyTorque Girl / Off Track
Off Track: Torque Girl’s Golf Day
Torque Girl steps away from machines for a day on the golf course—a short story about curiosity, focus, learning and enjoying something new.
Read the storyMeet TorqueGirl
Your guide to the machinery behind the spectacle.
TorqueGirl makes complex engineering easier to see, hear and understand. Learn how a system works, explore the evidence and keep your curiosity moving.
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