Data Logging With SCT Products and Widebands

Always start by downloading the newest version of Livelink and Xcal drivers off of SCT's download page.  Load both of the Xcal drivers.  Plug in the xcal and make sure it turns on.  Then unplug it.   I've found that the best way to reduce livelink errors is to always reboot the computer before doing any data logging and follow this order.  Plug the SCT device into the OBD2 port up under the drivers side dash.  Start up the livelink with no other programs running and wait for it to load, but to not touch anything.  Then plug the SCT device into the usb port of the computer and start the car.  Click on the graph icon (under file on the top left) to select the options you would like to data log.  If you are not logging any external signals click OK and it should say verifying PIDs and the options should pop up.

Logging External Devices

If you have a Wideband this is how you can log its output with SCT dataloggers. Remember to select the analog options (1+2) if you are logging external 0-5V inputs.  When you click OK it should say "verifying PIDs" (process ID) and take a few seconds.  Once all the options pop up you can right click on the analog option to input the formula to convert voltage into your parameter (AF, boost, EGT, etc).  Note that it does not follow "math rules" so 2*V+10 is not the same as 10+2*V (becomes [10+2]*v).  Also you must use the star key because 2*V is not the same as 2V or 2xV. Click here are some common formulas for external devices.  The new backlit Xcals require you to multiply the voltage value by an additional 4.34V so 2V+10 will become 8.68V+10.

Xcal2 Data Cable Wiring

Xcal3 and Livewire

IEEE-1394 6 Pin Male Connector Pin Orientation

Advanced SCT datalogging and data analysis

This includes parameters and how to analyze your data using excel.

This is very basic information so please contact joe@tricktuners.com for more specific issues.