What’s the difference between VXDIAG Porsche PT3G PIWIS III and VNCI PT3G diagnostic tool?
Check the table comparison below:
| Porsche Tester | VXDIAG PT3G
|
VNCI PT3G
|
Custom VAS6154A
|
| Brand | VXDIAG | VNCI | Clone |
| Driver | VX Manager and PT3G driver | VNCI driver | Driver for VAS6154 PIWIS3 |
| CAN FD/DoIP protocol | DoIP yes, No CAN FD | Yes | No |
| Compatible with multi-version PIWIS | Yes | Yes | Patch required |
| KW71 protocol 1995MY previous vehicles | No | Yes | No |
| Vehicle Coverage | 2005-2022 | 1996-2023 | 2005-2022 |
| Software version | V38.250+ V41.600 dual system | V40+v42 dual system | |
| Software update | Update by SSD | Update by U disk | – |
| Firmware update | Update online | Update online | – |
| Compatible with original PIWIS driver | No | Yes | No |
| Compatible with original software | Yes | Yes | Yes |
| Works as J2534 passthru device | Yes | No | Yes |
| Read/clear error code | Yes | Yes | Yes |
| Component test | Yes | Yes | Yes |
| Read data stream | Yes | Yes | Yes |
| Boot Fault Finding (GFF) | Yes | Yes | Yes |
| Enquiry Catalogue Parts | Yes | Yes | Yes |
| Maintenance/repair function | Yes | Yes | Yes |
| Logging | Yes | Yes | Yes |
| Wiring diagram application | Yes | Yes | Yes |
| ECU Coding | Yes | Yes | Yes |
| ECU Programming | Yes, need online account | No | unknown |
| Engineering Mode | Yes | No | unknown |
| Connection | USB, WiFi and LAN | USB only | USB, WiFi |
| License | Porsche license, able to add more car brands to the device | Porsche license only. | – |
In sum:
VNCI is compatible with original driver and works on older Porsche. It supports USB connection only. It will do full system diagnostics and coding, but cannot do online programming and special functions through engineer mode. It cannot be used as Passthru device. Don’t support VCI setting.
VXDIAG PT3G is better on 2005 onwards Porsche models. Supports USB, WiFi and WLAN connection. Can be used as j2534 passthru device. It has online programming (with online account) and coding capabilities. It enables users to perform various programming tasks, such as ECU coding, key programming, and module adaptation.
Both devices firmware can be updated online, software update by SSD/U disk.