i've been toying with a friends 1995 audi S6 avant and decided to dive into the ECU and see whats going on. this is a work in progress but i figured i'd share the defintion i've come up with so far in hopes to get some input and assistance with this definition. any help and or revisions to this would be awesome. i posted the stock BIN file along with the XDF definition i've come up with so far.

the car i have is a 1995 URS6 avant that was bought from the original owner and that guy owned a local audi dealership. this car is completely unmolested in any way and has been dealer serviced its whole entire life. thats odd that the ECU part# goes to an eariler car as every last inch of what has been done to it is documented and came with the car. basically i just want to figure out what maps are what and give the car a little more ass for now and as upgrade performance parts are bought/built for it i would like to be able to keep the state of tune up with the modifications done to the car. i believe that more than half of making power in a bosch ECU powered car is in the computer. i have a moates ostrich2 rom emulator but no way of logging the car. i have already had the ECU out obviously and socketed it and just installed the factory chips back in. i also would like to learn more about the boost chip and create a defintion for it as well too. i do realize that this ECU is actually 2 ECU's in one box, one controls the timing/fuel and the other controls the boost. im sure they reference each other but ultimately run on their own. this car at the moment peaks 15PSI and bleeds off to 12PSI i'd like to see boost numbers around 18 to 20 PSI consistant as i know the K24 can take that. once that gets boring that its on to a K27 and a tubular manifold but my real plan is to drop a 35 or 40R on it and go for broke. that will require standalone which i've come to terms with. anymore input would be awesome. thanks man.

well thanks for the input, i cannot even find an aftermarket tune file for this car anywhere online to even start to compare. i work on figuring out tuning all my cars myself because i like doing it and what people charge just for a chip tune is insane!!!! i sell tunes to people locally for 75.00 to a 100.00. i share my files with the online community because i dont care, i think if you have the want and drive to figure out how to tune your car thats awesome and if you would rather just pay people like us to do it than im cool with that too. i've worked with ME7 and its definately a weird form of motronic how everything changes so much just from year to year or even part number to part number for each ECU.
my main focus has always been digifant 1 from the old corrado's, i currently have an audi 4000 thats 10V turbo swapped but its using the NG 2.3 bottom end and a JT regular cylinder head with an MC intake and turbo manifolds and a K24 from an S6 thats fully functional and runs great on digifant 1. i just recently worked out a fuel and timing cut launch control for it, it makes the car a rocket ship coming off a street light at 7 PSI. lol. oh well though i guess i'll jsut have to dig deeper online and see if i can dig up a tune fine and a boost chip file to compare to. i do have a file from a 200 20v turbo thats from an unknown tuner but its a completely different animal. thanks anyhow for the input.

Here's few aftermark files.
Have more, but those are my own custom for autotrans with all features.
Also i have MTM version for manual trans

I think this file may help you. It was from a 1995 Audi S6 I believe.

1.65 spec boost @ 4500, it will never reach that.
Duty cycle is way too low to actually reach that boost. With this file probably boost varies a lot between gears. A lot more in higher gears.

Ignition timing in bottom right corner of timing map is not tuned properly.
It will probably never go there, but the ignition there is more like for meth tune, not pump.
However, in the max boost zone timing is late (9 deg BTDC)... maybe for 95 RON, but would be better to run less boost and more timing.

Down low fuel map is leaned out a lot, I think this tune should knock when coming on boost.

I did not check the 551A file posted above, but I would excercise some caution if running the file Tony posted on 95 RON. I would recommend 98 RON and not loading it too much at low rpms in high gears.

VEMS FTW