What is the difference between AuroTuner and Alientech Kess V3?
Both AutoTuner and Alientech KESS3 are popular ECU programming tools used by professionals for reading, writing, and tuning vehicle ECUs.
It is a high-performance ECU programmer supporting OBD, Bench, and Boot (BSL) modes. It features ultra-fast reading/writing, a user-friendly interface, and automatic checksum correction. With a one-time payment, free lifetime updates (No Subscription), and a 5-year warranty, it provides a cost-effective and reliable solution for tuning and diagnostics across a wide range of ECUs and gearboxes.
Its growing popularity is largely due to its ability to handle newer vehicles, particularly BMW and Mercedes models, via OBD—a capability that older tools initially struggled to achieve.
Alientech KESS3 ECU Programmer:
The Alientech KESS3 is the latest flagship ECU remapping tool from Alientech, an Italian company with over 30 years of expertise in vehicle tuning. As the successor to the popular KESSv2 and K-TAG, KESS3 integrates OBD, Bench, and Boot mode tuning into a single, versatile device. Designed for flexibility, performance, and ease of use, it caters to both beginners and experienced professionals, making it a powerful all-in-one solution for ECU programming.
- Ease of Use & Speed
AutoTuner:
- Known for fast read/write speeds (one of the fastest in the market).
- Simple, intuitive software interface
- Automatic checksum correction
KESS3:
- Newer interface compared to previous KESS2 models
- Offers both OBD, Bench, and Boot modes (combining features of KESSv2 and KTAG).
- Slower than AutoTuner in some cases but still efficient
- Coverage & Vehicle Support
AutoTuner:
- Strong support for European vehicles (BMW, VAG, Mercedes, Peugeot, Renault, etc.)
- Less coverage for some Asian or American models
KESS3:
- Wider vehicle coverage (cars, bikes, trucks, marine, and tractors)
- More support for older ECUs compared to AutoTuner
- Connection Modes
- Supports OBD, Bench, and Boot modes (automatic mode switching)
- Stronger focus on Bench and Boot operations
- Also supports OBD, Bench, and Boot modes.
- Offers more flexibility with older ECUs in Boot mode
- Pricing & Subscription Model
AutoTuner:
- One-time purchase, no annual subscription
- Free updates
KESS3:
- Requires an annual subscription for updates and protocols
- Different activation packages (OBD, Bench, Boot) available separately
- Additional Features
AutoTuner:
- Automatic ECU recognition
- Regular free updates
- Limited DTC removal features
KESS3:
- Supports DTC removal, cloning, and advanced tuning options
- More extensive database of supported ECUs
Which One Should You Choose?
Choose AutoTuner if:
- You need faster ECU reading/writing speeds.
- You prefer one-time payment without yearly fees.
- Your focus is mostly on European vehicles.
Choose KESS3 if:
- You need broader vehicle coverage (cars, bikes, marine, tractors).
- You work with older ECUs that require Boot mode.
- You need advanced DTC removal and tuning options.
Both tools are excellent, and your choice depends on your business needs.
AutoTuner ECU Programmer Master Version:
https://www.obdexpress.co.uk/wholesale/autotuner-ecu-programmer-master-version.html
AutoTuner ECU Programmer Slave Version:
https://www.obdexpress.co.uk/wholesale/autotuner-ecu-tool-slave-version.html
ALIENTECH KESS3:
https://www.obdexpress.co.uk/wholesale/kess-v3-ecu-programmer.html
