*Every version of Ross-Tech software is slightly different. This “how to” guide will cover how to perform basic performance logging, and also how to interpret some of the results (covered in the next post). There are several parameters that can be logged that will give a good indication as to how your car is running, and if there are any problems. Logging is critical to understanding how your car is performing, and even more so if you are tuned. Several people have asked about logging their vehicle, so I put together a “how to” on logging with the Ross-Tech VCDS software and cable (VAGCOM).