PerfExpert

Turn your smartphone into a powerful onboard dyno!
Measure your car’s real engine power and torque with 2% accuracy — all by performing a simple acceleration!
Verify the effectiveness of your tuning, remaps, or upgrades with an independent, objective, and affordable solution.
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What is PerfExpert?
PerfExpert – Car Onboard Dyno & Timer is a professional-grade app that lets you measure your car’s real performance:
• Engine power & torque curves
• 0–60 mph / 0–100 km/h acceleration times
• Quarter mile / 400 m times, and more.
All tests are performed using just your phone — no connection to your car required. Results come in detailed reports with interactive charts.
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How does the dyno work?
1. Create your car profile
Enter key specs like curb weight, tire size, and displacement. If you’re unsure, the app helps you find them.
2. Mount your phone securely
No need for OBD or external sensors. PerfExpert uses your phone’s internal sensors to capture acceleration accurately.
3. Perform a full-throttle pull
On a flat, straight road, accelerate from low revs to redline in one gear — done!
Note: Dyno tests are not compatible with automatic gearboxes that lack a manual mode.
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What can you do with PerfExpert?
• Evaluate ECU remaps, chip tuning, and intake/exhaust mods
• Track changes after hardware upgrades or chassis setup changes
• Share dyno reports with your tuner or friends
• Export your runs as interactive charts and raw data
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Sample reports & FAQ
• Featured results: https://www.perfexpert-network.com/results/featured
• FAQ: https://www.perfexpert-app.com/faq
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Join the community
• Facebook page: https://www.facebook.com/PerfExpert
• User group & support: https://www.facebook.com/groups/perfexpert/
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Key features
• Dyno Test:
Accurately measure horsepower and torque. Includes rev limiter detection and power loss modeling.
• Correction standards:
Apply standard corrections (DIN, SAE, ISO, JIS, CEE) using real-time ambient conditions (pressure, temperature, humidity).
• Timed Run Test:
Measure acceleration and distance milestones: 0–60 mph, 0–1/4 mile, 0–100 km/h, and more.
• High-frequency sensor use:
Maximum precision thanks to high-rate accelerometer sampling and advanced smoothing.
• Connect to external GPS devices like RaceBox Mini, Mini S, Micro, RaceBox.ru, or VBox Sport for even higher accuracy and features like rolling start dyno runs (requires PerfExpert Pro su).
• Share results online with a public web link, viewable on the PerfExpert Network
• Custom units:
Supports a wide range of units: Hp, Ch, Nm, Ft.lb, m/s², °C, psi, km/h, mph, m, ft, etc.
• Results can be exported as TSV data file or PNG image.
Privacy Policy: https://www.perfexpert-app.com/privacy-policy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/