Pro Tip: Run the Kess software as Administrator. Windows 10/11 often restricts USB COM port access.
The occupies a unique space in the tuning world. As the "best" clone version of an older, industry-standard tool, it represents a high-risk, high-reward proposition. It democratized access to professional-level tuning, allowing enthusiasts and small shops to enter the business at a very low cost. Kess 2.90
While the Alientech KESS 3 is the new standard, the Kess v2 with 2.90 software remains a "reliable workhorse" for many tuners. It connects to the vehicle's diagnostic port to read and write parameters of cars, motorbikes, trucks, tractors, and boats, allowing for modification of performance tuning files . Core Features of Kess 2.90 Pro Tip: Run the Kess software as Administrator
