Hi Gunter,
We'll be doing a dyno day in Vancouver in the spring if you can wait until then. There won't be much tuning going on (depending on how many cars we have to get through) but you will get 2 to 3 pulls and an AFR plot for each run. Then, at least you'll have some numbers and can compare to the other cars that are there that day. Last year we had 16 cars but none with an engine simlar to yours.
If you're interested keep an eye
here for an announcement.