Porsche’s diagnostic history includes the early 9268 reader, the 9288 Hammer, System Tester 2, and successive PIWIS testers. Porsche-specific software and hardware must be distinguished from general Bosch multi-make equipment and owner-converted devices.
The documented Bosch links include the 9288 and KTS 300 family, PST2 and KTS 500, and PIWIS I and KTS 650. PIWIS II uses a laptop and separate vehicle communication interface. Porsche service documents identify PIWIS Tester 4 by 2024–25.
Testers and software
- Porsche 9288 and System Tester 1
- Porsche System Tester 2
- Porsche PIWIS Tester I
- Porsche PIWIS Tester II
- Porsche PIWIS Tester III
- Porsche PIWIS Tester 4
- Porsche and Bosch tester hardware relationships
The linked Porsche history includes photographs of multiple generations. An original Porsche unit can have a different colour or fascia from a green Bosch unit, but colour alone does not prove authenticity or functionality.
Photographs and screenshots
Related pages
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- Porsche RJ: evolution of Porsche diagnostic systems. Porsche RJ; Portuguese, illustrated history. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.
- Durametric: history of Porsche diagnostic tools. Durametric; historical account and equipment photographs. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.
- Porsche service technical information: PIWIS Tester 4. Porsche Cars North America, 2025; hosted by NHTSA. Source revision page or document reviewed 2026-11-10; accessed 2026-11-10.