Originally Posted by nine9six

In order to completely flush the brake system, one needs to be able to cycle the ABS and ABD in order to evacuate the old brake fluid currently held within the systems; prior to the brake fluid flush.

To the best of my knowledge, there are several Porsche specific diagnostic tools which enable one to exercise the ABS and ABD systems.

1. The Bosch 9288, (Hammer).
2. The PST2, (Bosch KTS 500) or
3. The PIWIS I, (Bosch KTS 650).
4. The PIWIS II, (Bosch KTS 670)

I recently purchased a PIWIS I (KTS 650), which is compatible with the following vehicles.
Cayman, Boxster 986, 911 996, Cayenne, GT1, GT3 996, 928, 968, 944, GT2 996, Carrera GT, 911 997, 911 964 & 993, Boxster 987.

I am offering local (Socal) Rennlisters, (with the above-mentioned compatible vehicles) a very reasonable ($50) diagnostic look into their vehicles; or exercise the ABS/ABD systems, prior to the owners performing a brake and/or clutch slave bleed.

If interested, I can be contacted via PM.

Porsche Diagnostic Tester Information:

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

Overview & History

The PIWIS I, was actually a Bosch/Vetronix KTS-650. 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.

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. The PST2 is backward applicable to OBDI but doesn't do some AC and Airbag issues on early cars covered by KTS-300/301. The PIWIS should eliminate the need for a PST2 but one may still need the KTS-300/301 for the earliest applications.

My best