V2.2.1
- Shift down is given priority when the accelerator is off.
V2.1.0
- Fix icons, support for some devices that did not work, etc.
V 2.0.9
- A link to the privacy policy was added. (There is no functional change.)
V 2.0.8
I changed a suction sound (turbo sound) slightly.
- Shift timing was optimized for daily driving scenes.
· In addition, it conformed to the policy of Google Play.
V 2.0.6
· K-LINE system slow communication countermeasure (extension of timeout etc.)
V2.0.5
- Change of shift down condition
- Display of splash screen
- Troubleshoot a problem that occurs when restarting after automatic termination
V 2.0.3
- The VRPM_Server function was added.
When the TC value becomes 120 or more, it becomes Unlimited mode and all function restrictions are canceled.
If you select VRPM_Server, you can set the engine sound playback to Mute and provide virtual revolution to the external application (RevHeadz etc).
(The simple procedure is published at https: // photos.app.goo.gl/cEug2SWiRBYCAmWUA)
· TC replenishment amount has been increased significantly. The TC value will be on the 120th place with three or four ad clicks.
· We have improved many other communication performance (connectivity, speed etc.).


It is an application that generates engine sound using data received from ELM 327.

Since it functions only with the vehicle speed and the throttle signal, it can also be used in electric vehicles and hybrid vehicles.

Please connect with car stereo with AUX cable or Bluetooth.

Be sure to pair with ELM 327 before starting this application.

Tap "NOT CONNECTED" displayed in the center of the title bar to display the device list.

Please select the ELM 327 device from the list.

Tap / long press anywhere on the screen to open the setting screen.

Tap 'Get TC' to display advertisement.

Clicking on the ad adds TC and the function restriction is canceled.