because some phones are not only for phone calls.....

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gPC Hints & Tips

Hints & Tips


Steps for the device placement and calibration....

  • Place the mobile on your car holder
  • Open the gPC
  • Go to the orange panel, and press the button "calibrate" (this is the position calibration, to know the application the position of the device on your car)
    (only be careful, the left side of your phone have to "look" to the left door, and the right, to the right door (for the lateral g), any other angle is acceptable)
  • Start the Timer and the GPS (optional, you can start to record your ride)
  • Start your engine
  • Start your ride

Make the calibration and the test ride
on the surface level.

How you can check that the gPC is proper calibrated???
Before the test ride, with the car on rest mode, in the main g-force gauge have to see 0g (+-0.02g).
Otherwise you have to make position calibration again (orange panel, calibrate button)

Advance g-Sensor Scale Calibrator

  • This feature is added in all versions from v2.10, this feature has been added to allow precise calibration of your device G-Sensor.
    This is essential for obtaining  more accurate HP results. The Advance G-Sensor Calibration only needs to be completed once.

    Please follow the instructions below:
    (Note: If you have ANY other applications that can calibrate/resets the G-Sensor this
    will need to be accurately set BEFORE running gPC v2.10)

  • Open gPC v2.10 with device Screen Up and on a Flat Surface.
  • Go to the Configuration panel, and press the Yellow Icon in the Top Left corner of the screenPress "Start Calibration"
  • With your device Screen Up on a Flat Surface the Top Right diagram should have "Calibrate" displaying below it.
    (Note: If not - please check any other programs that can calibrate or reset the G-Sensor)
  • Press Calibrate - this is now set.
  • Repeat the last 2 steps for the other 5 positions.
  • With all 6 Calibrations set to OK you can now press close and the Advanced Calibration is Complete.

Device straightly with the keys down


Device upside down with the keys up.

Device with the left side on the table.


Device with the right side on the table.

Device flat on the table, with the screen up.


Device flat on the table, with the screen down.


  • On the Graph panel tap the Blue Icon in the Top Left corner opens and closes the Graphs.
  • Tapping the graph itself switches between Speed and HP Graphs.
  • To exit from graphs, tap the blue icon up-left.


  • This is VERY IMPORTANT to obtain ACCURATE HP readings!
    To accurately calculate the HP of your car all of this data must be filled out with the specific information of your car.
    Another must is testing in a gear that is a 1:1 Ratio. In a 5spd or 6spd this is normally 4rd (Manual Transmission)
    Please check the specifications for your car!
    Testing must be done on a SMOOTH, LEVEL road.

    • Enter the horsepower configuration with the Orange Icon in the Top Left corner of the second panel
    • Vehicle weight: This must be the TOTAL weight of the Car, including the weight of the Driver,  Passengers, Fuel, and Anything else stored in the car.

    Wheel HP / Engine HP: This can be toggled to show either Wheel or Engine HP.
    If calculating Engine HP please select the correct transmission configuration for your car.

    Advanced HP Configurations: This information would be very hard to guess, fortunately most manufactures now give these figures out within there car specifications.
    Databases can be found on the Internet - a good place to look is here or similar other sites.

  • The "Drag Coefficient" (Cd) must be multiplied by x100
    (e.g. your car Cd is 0.32, the value that you must enter is 0.32x100 = 32 ).
  • The "Frontal Area" must be multiplied by x100
    1) Your cars Frontal Area is 7.1 ft^2, the value that you must enter is 7.1x100 = 710 with the ft^2 checked
    2) Your cars Frontal Area is 2.2 m^2, the value that you must place is 2.2x100 = 220 with the m^2 checked.
  • For more accurate Horsepower calculations, try to measure your car in high speeds
    (e.g. accelarate from 100Km/h to 140Km/h).
  • For the calculated horsepower, make the measure on the road WITHOUT any pothole AND WITHOUT ascent and/or descent (ONLY on a nice smooth, straight road).



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