Rowland Restorations
K-line Logger

Live engine data from your Kawasaki jet ski, on your PC.

Plug a cable into the ski's diagnostic port and watch RPM, throttle, intake pressure, temperatures and battery voltage as you ride. Save a log of each run to look at later.

Download for Windows

Free and open source (source code on GitHub). Works on Windows 10 and 11.

You're on a phone. This app runs on a Windows computer, so open this page on your PC to download it.

What you need

  • A Windows 10 or 11 computer
  • A USB K-line cable The blue KKL 409.1 cable with an FTDI chip works. It's often sold as a VAG or VCDS cable.
  • A Kawasaki 4-pin to OBD2 adapter Connects the cable to the ski's diagnostic plug.
  • A charged battery in the ski

Installing

  1. Download the installer Click Download for Windows. If your browser asks whether to keep the file, choose Keep.
  2. Open it Double-click KlineLogger-Setup.exe in your Downloads folder.
  3. Get past the Windows warning
    Windows may show a blue box that says Windows protected your PC. This is normal for new programs from small developers. Click More info, then Run anyway.
  4. Finish Click Next through the installer. When it's done, K-line Logger has an icon on your desktop.

Connecting to your ski

  1. Plug the USB cable into your computer. Windows sets it up on its own, which can take a minute the first time.
  2. Connect the adapter to the ski's diagnostic plug, then the cable to the adapter.
  3. Turn the key on or press start so the ski's computer wakes up.
  4. Open K-line Logger and press Connect. The light turns green when it's reading data.

Want to look around first? Pick Demo in the Cable list to try the app without a ski.

Stuck? Get in touch. K-line Logger is free under the MIT license. Not affiliated with or endorsed by Kawasaki.