Pneumatic seats? Is that what the a/c seats are called?

Mike0000 mentioned a chip upgrade for the turbo cars. Does anyone know anything about this? Other vehicles we have had experienced an increase in fuel mileage after digital tuning.

I also agree with the comments above about an oil pressure gauge. I'd like to know Oil Pressure, EGT, Boost and possibly even fuel pressure. All of these parameters monitored through one digital monitor would be great.

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85 300D 3 pedal. Current project.
83 300TD (need rear wiper assembly dead or alive)
84 300SD Daily driver
85 300TD almost 400k miles and driven daily.
98 E300D *sold
86 300SDL *sold and made flawless 10 hour journey to new home.