Drag Log

极速 (Extreme Speed) Pro Telemetry is the ultimate performance tracking and engine diagnostic dashboard for car enthusiasts, tuners, and drag racers.

Turn your smartphone into a highly accurate, professional-grade GPS telemetry meter and OBD2 scanner. Whether you are testing a new tune, logging your 1/4 mile drag times, or monitoring live engine boost on the track, we provide the raw, real-time data you need—with zero lag and stunning glassmorphism aesthetics.

🏁 PRECISION GPS PERFORMANCE TIMING
Leave the expensive timing gear at home. Using high-frequency GPS tracking, measure your vehicle’s true acceleration metrics automatically. Just hold to arm, and the timer starts the exact millisecond you move.

0-60 mph & 0-100 km/h: Test your off-the-line launch speed.

60-130 mph & 100-200 km/h: Measure your rolling acceleration and top-end power.

1/4 Mile (400m): Standard drag strip timing right on your dashboard.

1-Foot Rollout Rule: Toggle the standard 1-foot (0.3m) drag strip rollout tolerance to ignore initial tire creep for highly accurate strip times.

🏎️ LIVE OBD2 ENGINE DATA
Connect any standard ELM327 Bluetooth Low Energy (BLE) OBD2 dongle to unlock a live stream of your engine's brain.

Live RPM Gauge: Watch your engine speed match your acceleration times perfectly.

Intake Pressure / Boost (MAP): Monitor your turbo or supercharger pressure in real-time (kPa).

Throttle Position: See exactly when you hit 100% wide-open throttle.

🎛️ ADVANCED SENSOR DIAGNOSTICS
Dive into the raw physics of your vehicle's handling using your device's internal gyroscope and accelerometers.

Friction Circle (G-Circle): Live 2D visualizer plotting your X and Y G-forces to analyze cornering grip and braking limits.

Peak G-Force Tracking: Automatically logs the maximum G-force pulled during your launch.

Pitch, Roll & Azimuth: Monitor vehicle tilt and heading in real-time.

🌙 WINDSHIELD HUD MODE
Driving at night? Tap the HUD button to mirror the dashboard horizontally. Place your phone flat on the dash to reflect your live speed and acceleration times directly onto your windshield glass.

🔥 BUILT FOR PRO DRIVERS

Haptic & Audio Feedback: Feel a heavy vibration when GPS achieves satellite lock, and hear a launch chime the moment you start moving. Keep your eyes on the road, not the screen.

Wakelock: Prevents your screen from sleeping during a run.

Sensor Smoothing: Adjustable data filtering (Raw, Balanced, or High) to ensure stable readings no matter how stiff your suspension is.

Dark & Light Modes: A beautiful, responsive interface that adapts to your environment.

Hardware Requirements:

GPS Timing: Requires a clear view of the sky and location permissions. Device must be securely mounted.

Engine Data: Requires a third-party ELM327 BLE (Bluetooth Low Energy) OBD2 adapter plugged into your vehicle's OBD2 port.

Download 极速 Pro Telemetry today, connect your car, and prove your performance!