Installing your GPX Pro 4 or GPX Pro 8 - Cornerspeed for GPX Pro Laptimers and Dataloggers

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Installing your GPX Pro 4 or GPX Pro 8

DATA Loggers

GPX Pro Installation

Right out of the box the Gpx Pro-4 and 8 is ready to give you laptimes. As long as the unit is charged, and the GPS Antenna is connected, you are ready for the track. Ensure that you have a GPS signal, and then you can venture onto the track. On your 1st lap, the display will indicate that it is looking for "1st loop", and once you have done a lap, the unit will start showing you laptimes on the longest straight. At the end of your 1st session as you pit, the screen will display a message asking you to enter the track name. Once you saved the track, you can now edit the start/finish line and add splits.
However, your GPX Pro needs to be correctly wired to log data from your Race Bike or Race Car.

GPX DAQ Inputs for GPX Pro -4

All of the external channels of the GPX Pro 4/8 can be configured as either an analog input or a digital input

  • Red Wire Cable A = power, Black Wire Cable A = Earth
  • Analog/digital input # 1 is the BROWN WIRE OF CABLE “A” = RPM
  • Analog/digital input # 2 is the YELLOW WIRE OF CABLE “A” = TPS
  • Analog/digital input # 3 is the GREEN WIRE OF CABLE “A”  = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • Analog/digital input # 4 is the BLUE WIRE OF CABLE “A” = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • In addition, you should also calibrate the "internal channels"  - Acceleration and Gear, as well as your Shitflights.

So by connecting 4x wires, Power - Earth - RPM - TPS, the GPX Pro-4 is ready to give you the following information:-
Speed - RPM - Throttle Position, Gear Position, Acceleration, G-force, Laptimes, 5x Splits, Shiftlights.

GPX DAQ Inputs for GPX Pro -8

All of the external channels of the GPX Pro 4/8 can be configured as either an analog input or a digital input
  • Red Wire Cable A = power, Black Wire Cable A = Earth
  • Analog/digital input # 1 is the BROWN WIRE OF CABLE “A” = RPM
  • Analog/digital input # 2 is the YELLOW WIRE OF CABLE “A” = TPS
  • Analog/digital input # 3 is the GREEN WIRE OF CABLE “A”  = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • Analog/digital input # 4 is the BLUE WIRE OF CABLE “A” = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • Analog/digital input # 5 is the BROWN WIRE OF CABLE “B” = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • Analog/digital input # 6 is the RED WIRE OF CABLE “B” = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • Analog/digital input # 7 is the GREEN WIRE OF CABLE “B” = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • Analog/digital input # 8 is the BLUE WIRE OF CABLE “B” = Optional sensor such as Brake,  Suspension Potentiometer or other.
  • Black Wire of Cable "B" connect to the vehciles battery negative.
The GPX Pro 8 has a highly accurate 5V reference output voltage on the YELLOW WIRE OF CABLE "B".  It can supply approximately up to 25 ma of current.  It is typically used to power suspension potentiometers and thermistors.

In addition, you should also calibrate the "internal channels"  - Acceleration and Gear, as well as your Shitflights.

So by connecting 4x wires, Power - Earth - RPM - TPS, the GPX Pro-8 is ready to give you the following information:-
Speed - RPM - Throttle Position, Gear Position, Acceleration, G-force, Laptimes, 5x Splits, Shiftlights.


In addition to the above installation tips, XT Racing also offer a Break-Out box for the GPX Pro 4 and 8 that will simplyfy the installtion of sensors.
The sensor breakout box (available for both the GPX Pro 4 and GPX Pro 8) provides a plug-and-go solution for XT Racing's line of sensors. Simply connect the cables to the GPX Pro, add power and start adding sensors.

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