Can you adjust the boost pressure with VAG-COM on an Audi B4 (1Z)?

Hello

Maybe the question sounds a bit silly (I used the search function), but I wanted to test my old turbocharger in my Audi B4 (1Z) from 1993 today to see how much boost it still produces. It's the first turbocharger I ever had, and it has 330,000 km on it. I connected my laptop to the car, first read out the error memory, but there was nothing. I also need to mention that I always have to increase the start baud from 0 to 240 first, otherwise nothing happens. Then I went to the measurement block. I hope it was correct, but when I tried to access the different groups, I got an error message saying "not found". Could it be that the car is too old and the control unit simply can't do it, or am I just being misled?
Maybe someone can tell me how to do this? When I once replaced a single ABS sensor, I was also able to read the current speed of each individual wheel in the measurement block.

Best regards


thomas