Ok,
I was curious how my engine was running since it has the .120" headgasket, effectively dropping the compression to around 9.4 or 9.5:1. The car has the AA chip for N/A OBDI 1995 M3.

I did a cruise afr log, and then one going WOT from 2500-4500 RPM; I'm still breaking it in of course, so that's why it is a limited run, but anyway, you can check out the AFR's for yourself.

Check the tabs at the bottom of the spreadsheet to find the different charts:
http://filebox.vt.edu/users/nicolasb/Random/M3/Turbo/documentary/Test%20AFR%20logs%203.15.06%20NA.xls

Nick

What are you using hardware wise to get the logging?

RussC

It's a techedge wideband. The software outputs a comma separated value (CSV) file that you can import into Excel. I then made up a couple charts using the data and got what you see.

Reason I did this was that I was curious how the low c/r would affect the tune (fuel-wise) and I know that people ask about how it will run about once a week on here. So, to answer, it runs fine on the stock tune.