A dyno cell
in your pocket.
Drag races, any-speed splits, and a full road dynamometer powered by TrueNorth sensor fusion. $200-box accuracy from the phone you already own, measuring real horsepower and torque on real roads.
1 Hz GPS is not enough.
We fuse the whole phone.
Typical apps sample your phone's GPS once a second and connect the dots with naive interpolation, far too coarse for a drag run or a dyno pull. TrueNorth fuses GPS plus IMU through a 10-state filter into a high-rate, high-accuracy kinematics stream.
A drag run is decided in tenths; a dyno pull rides on clean acceleration. Coarse 1 Hz GPS can not see it. TrueNorth turns phone sensors into a fused, high-rate output that can.
A dyno is just an accelerometer.
Strip away the rollers and a chassis dyno is fundamentally a sensor measuring acceleration, deriving torque from it, then horsepower from torque and RPM. Your phone measures acceleration too. Add vehicle weight, drag coefficient, tire size, and gearing, and it becomes a repeatable road dyno.
- Measures real load, friction, weather, and incline
- The exact conditions your engine actually tunes for
- Repeatable, on any road, for free
- SAE-corrected for apples-to-apples comparison
- Clean-room conditions with real-world load removed
- Tuning there can be risky unless extremes are simulated
- Some real conditions can not be reproduced at all
- $100-150/hr, and you have to drive to it
Chassis dynos have their place, but they are not strictly better. Weather, altitude, fuel, and load are what your engine faces every day. DragStar measures power where it happens, then normalizes it so you can compare across seasons.
Drag. AnySpeed. Dyno.
One sensor engine, three test modes. Each captures the same high-rate TrueNorth kinematics and files the run to your vehicle history for comparison.
- 60-ft, 330-ft, 1/8-mile, and 1/4-mile splits
- Live distance and velocity splits
- Trap speed and elapsed time, to the millisecond
- 0-60, 0-130, 60-130, or your own window
- Live g-force and speed through the pull
- Compare every run head-to-head
- Live HP and torque curves on a single-gear pull
- Raw or SAE-corrected, crank or wheel
- Peak HP and torque with full curve history
Stop trusting your butt dyno.
Because every run is SAE-corrected and tracked against your vehicle's history, DragStar tells a real gain from a lucky cold morning and proves whether the money you spent actually made power.
- Baseline HP, torque, and trap speed
- Where in the RPM band is the power?
- Capture it weather-corrected from day one
- Intake, exhaust, E85, or a new tune
- Bigger turbo, water-meth, gearing
- One change at a time, so you know what did it
- Did it actually add power, SAE-corrected?
- Or did a cold day just flatter the numbers?
- Overlay before and after on one curve
Not how to tap buttons - how to make power.
Every tutorial is a real job on a real car: measure a baseline, make the change, and use DragStar to prove it worked.
6:3810:11
8:529:20Turn your phone into a dyno cell and a drag strip, and make every modification prove itself.