Automatic Transmission Coding: A6 C4 AEL

Hello,

I drive an Audi A6 C4 AEL with an automatic transmission, manufactured in 1996, and I would like to optimize/reduce its fuel consumption. Here's what I found on the RLF forum:

Encoding.
Engine.
Land.

00000
2.8L, 2 valves, 128 kW.
2.5L TDI, 85 kW.
USA
RdW 1)

00001
2.8L, 2 valves, 128 kW.
2.8 liters, 5 volts, 142 kilowatts.
2.5L TDI, 103 kW.
RdW 1)

00002
2.6L, 2 valves, 110 kW.
RdW 1)

00003
2.2L 4-valve engine, 169 kW.
2.4L 2V
RdW 1)
Thailand.

0001X Dynamic switching program is disabled (only fixed, economical switching characteristics are active).

My question: How is the last part to be interpreted (0001X)? And more specifically, what should "X" represent? Should better power consumption values be expected when the DSP is turned off?

Somewhere I read that older BMWs with automatic transmissions, besides the economic/sports shift options, also had a manual mode. Is it possible to enable this through coding? That would be great.

Thank you very much and best regards!