Yeah, I can hear the turbo working, and I can sort of keep up with regular traffic on secondary roads. I don't have a non-turbo car to compare pickup with, So I'll assume that the turbo isn't the problem. The tach doesn't work, but the tranny seems to rev too high, higher than Mercedes intended. I did look at the clear line filter and it's black as night, even though it was changed a few months ago.
I'll change the filters (for the 3rd time in 2 years!) but I don't think that will solve my problem. It's always been like this.