Thanks for the great question. We only use datalogs, since it's both easier and cheaper for our clients, and more accurately reflects real-life motorcycle operating conditions. We rely on the client to use a Windows-based laptop and ECM cable to record the data, which we then analyze and use to remap the fueling on the bike. Repeat this a handful of times until changes are stable, and you've got a new, custom-tuned fuel map. But it doesn't end there. We also adjust corrections parameters to values that we have found are better suited to a well-tuned machine so that your bike operates to its greatest potential, and also has the flexibility provided by corrections when riding outside of your home environment
Thanks!