The Bosch KTS series supports some basic Porsche functions on Porsche 964, 969, and 944. The PIWIS is based on the Bosch KTS-650, but again it's software is Porsche specific. The PIWIS is only available on long term lease from Porsche. PIWIS also integrates repair manual information into the diagnostic tester. Porsche Integrated Workshop Information System (PIWIS) / KTS-650: Is similar to the PST2 but also supports CAN-BUS vehicles. The PST2 and the KTS-500 are no longer available. The PST2 is based on the Bosch KTS-500 computer system but uses Porsche specific software that is not available on the KTS-500. Porsche System Tester 2 (PST2) / KTS-500: Introduced in 1997 for Porsche dealers to service the 986 and 996 model cars, though the Porsche System Tester 2 (PST2) is capable of diagnosing all models since the 928. The factory Porsche card module offers the most functionality. The KTS-300 uses card modules for different makes of vehicles. Porsche 9288/Bosch KTS-300/301 AKA 'Hammer': This second generation tool was used on C2, C4, and 968. This device was used to diagnose Porsche 928. Porsche 9268 LH and EZK: The original diagnostic tool. The PIWIS should eliminate the need for a PST2 but one may still need the KTS-300/301 for the earliest applications. The PST2 is backward applicable to OBDI but doesn't do some AC and Airbag issues on early cars covered by KTS-300/301. Preceding the PST2 was the Porsche 9288/Bosch KTS-300/301 (aka 'Hammer' or 'Pocket System Tester') works on cars to 1995 but doesn't do everything. Prior to that the Porsche PST2 which was introduced in 1997 and ended in 2005 was actually a Bosch Diagnostics KTS-500, however the PST2 was slightly altered and colored differently than the KTS-500. Porsche PIWIS II, replaced the PIWIS I, which was actually a Bosch/Vetronix KTS-650. The PIWIS scan tool is only available on long term lease from Porsche.

Porsche Integrated Workshop Information System (PIWIS) scan tool works with the latest and legacy Porsche vehicles, it's equipped with a Panasonic Toughbook laptop.

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