Hey all.  I've been doing lots of digging lately and stumbled onto this site. 

So far it seems great.  I see a lot of people using tuner pro.  Which I've had for a few years. So I guess I'm not that new.   I understand that I need definition files and such.   But the problem I am having is that what I tinker with is just too old.  1990 Audi's.    One 1990 Audi 200 quattro turbo.  Being a 5 cyl running the factory cis system. . And the other being a 1990 Audi v8 quattro.

I can't seem to find  any files anywhere.   Anyone else around here mess with the dinosaurs?   

Well that's reassuring

The V8 is fuel injected with Motronic 2.4.
That one can make lots of power, but there is no knowledge out in the wild how it works, so you won't able to tune it correctly...

Just to get useful data out of it you will have to implement your own data logging routines and so on. BTDT

Sorry, if this seems harsh, but if you are asking such basic questions as to how to copy a 28DIP package chip, I don't see you getting very far with anything.

As for the V8 - you are not going to much/any power over it from standard. Their bane are the MAF's in the inlet manifold, which all read differently after 20 years, and making more power is mostly about getting a well working MAF and removing all the vacuum leaks. Second problem they have are the aluminum blocks which deteriorate.
The 3.6 PT engine is a bit better in this regard, as you can bore it out and sleeve it, but with the 4.2 engine after getting excessive ring clearance you have no option but to try to find a block in better condition.

Unless you are turbo- or supercharging the V8, or trying to convert it to a different fuel, there is no need to touch the ECU.