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AvailableAutomotive · Sound

2StepCheck: Make any car sound like a race car.

A plug-in OBD-II device that reads live engine data and plays race-engine sound through your stock stereo over Bluetooth, tuned from a phone app.

Buy at 2stepcheck.comHow it works
The clear-case 2StepCheck OBD-II device in front of a black sports car with flames from the exhausts on a wet city street at night
About 2 minutesTo install, no tools
BluetoothThrough your stock stereo
ESP32Custom firmware
Over the airUpdates
Overview

Engine sound that follows your right foot.

It plugs into the OBD-II port, reads live RPM, throttle and speed, and synthesises engine sound that tracks how you drive. The sound plays over Bluetooth through the stereo you already own, so there is nothing to cut, flash or rewire.

Real-time sound, not recordings

Sound is generated live from RPM, throttle and speed, so it reacts to every input.

Stackable effects

Layer overrun crackle, anti-lag bangs, turbo and blow-off valve on top of any engine voice.

The device only listens

It reads data from the car and plays audio. It doesn’t change how the engine runs.

How it works

Plug in, pair, play.

Plug in

Push it into the OBD-II port under the dash. About two minutes, no tools.

Pair

Connect it to your car’s Bluetooth like any other audio source.

Tune

Open the phone app to choose an engine voice, map RPM and pedal, and layer effects.

Engine voices

Pick a character. Make it yours.

Choose an engine voice and layer effects on top, all tuned live from your phone.

Anti-lag engine sound mode
Anti-lagHard-edged bangs on lift-off
Crackle engine sound mode
CracklePops and burbles on the overrun
V8 engine sound mode
V8Deep, rolling V8 under load
Turbo engine sound mode
TurboSpool, whistle and flutter
Rally engine sound mode
RallyRaw, aggressive rally character
Blow-off valve engine sound mode
Blow-off valveRelease on every shift

More effects and engine voices are available in the app, with new ones added over the air.

Phone app

Control it from the driver’s seat.

A phone app connects over Bluetooth LE to show a live dashboard and tune the sound as you drive.

  • Live RPM, speed and throttle from the car
  • Sound-level meter and engine-sound controls
  • Choose voices, map RPM and pedal, adjust effects
The 2StepCheck head-up display view showing live speed and RPM
The 2StepCheck phone app showing a live sound-level meter
Specifications

The details.

Processor
ESP32
Car connection
OBD-II (CAN), plug-in
Audio
Bluetooth A2DP source to your head unit
Control
Bluetooth LE with a phone web app
Motion sensing
Accelerometer and gyro
Installation
About two minutes, no tools, no wiring
Updates
Over the air
Built by The Mind Factory

Every layer, in-house.

  • Custom OBD-II and CAN board with motion sensors
  • Firmware for real-time sound synthesis, A2DP and Bluetooth LE
  • Phone app with live OBD data and effect tuning
  • The 2stepcheck.com store and customer guides
How we work

2StepCheck produces sound through your car’s audio system only. Always follow local laws and drive responsibly.

Ready to hear it?

Get your 2StepCheck and give your car a voice.

Buy at 2stepcheck.comAsk a question
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