I have a generic BLUE VagCom Cable. trying to connect to my 98 b5 a4 audi. VagCom 409-1 connects fine. Here is the log for nefmoto.
25/Dec/2011 08:50:11.159: USER: Starting slow init connection.
25/Dec/2011 08:50:13.763: USER: Connecting to address 0x01.
25/Dec/2011 08:50:15.986: LOG: Read incorrect sync byte, guessing baud rate is actually 9600.
25/Dec/2011 08:50:16.066: USER: Slow init succeeded.
25/Dec/2011 08:50:16.066: LOG: Setting Address: 0x01 KeyByte1: 0x01 KeyByte2: 0x0A
25/Dec/2011 08:50:16.376: LOG: KWP1281 read block
25/Dec/2011 08:50:16.477: LOG: KWP1281 sent block
25/Dec/2011 08:50:16.787: LOG: KWP1281 read block
25/Dec/2011 08:50:16.897: LOG: KWP1281 sent block
25/Dec/2011 08:50:17.178: LOG: KWP1281 read block
25/Dec/2011 08:50:17.278: LOG: KWP1281 sent block
25/Dec/2011 08:50:17.438: LOG: KWP1281 read block
25/Dec/2011 08:50:17.518: LOG: KWP1281 sent block
25/Dec/2011 08:50:17.588: LOG: KWP1281 read block
25/Dec/2011 08:50:17.688: LOG: KWP1281 sent block
25/Dec/2011 08:50:17.688: USER: KWP1281 connect info: 4D0907551AH 2.8L V6/5V MOTR HS D01 0r#
25/Dec/2011 08:50:19.190: USER: Connecting to address 0x01.
25/Dec/2011 08:50:21.414: LOG: Read incorrect sync byte, guessing baud rate is actually 9600.
25/Dec/2011 08:50:21.494: USER: Slow init succeeded.
25/Dec/2011 08:50:21.494: LOG: Setting Address: 0x01 KeyByte1: 0x01 KeyByte2: 0x0A
25/Dec/2011 08:50:21.804: LOG: KWP1281 read block
25/Dec/2011 08:50:21.904: LOG: KWP1281 sent block
25/Dec/2011 08:50:22.215: LOG: KWP1281 read block
25/Dec/2011 08:50:22.295: LOG: KWP1281 sent block
25/Dec/2011 08:50:22.595: LOG: KWP1281 read block
25/Dec/2011 08:50:22.675: LOG: KWP1281 sent block
25/Dec/2011 08:50:22.846: LOG: KWP1281 read block
25/Dec/2011 08:50:22.946: LOG: KWP1281 sent block
25/Dec/2011 08:50:23.016: LOG: KWP1281 read block
25/Dec/2011 08:50:23.106: LOG: KWP1281 sent block
25/Dec/2011 08:50:23.106: USER: KWP1281 connect info: 4D0907551AH 2.8L V6/5V MOTR HS D01 0r#
25/Dec/2011 08:50:24.598: USER: Connecting to address 0x11.
25/Dec/2011 08:50:27.432: LOG: Failed to read sync byte, guessing baud rate is actually 9600.
25/Dec/2011 08:50:27.482: LOG: Not enough key bytes, read: 0
25/Dec/2011 08:50:27.502: USER: Slow init failed.
25/Dec/2011 08:50:27.502: USER: Disconnected
25/Dec/2011 08:50:27.542: LOG: Setting communication timings to defaults.
25/Dec/2011 08:50:27.562: LOG: Closing FTDI device.
25/Dec/2011 08:50:27.572: LOG: Send receive thread now terminated.