Hi,
I notice you are trying to tune your ECU, are you looking at a bumping up the power significantly. I am sorry if I seem like I am hijacking the post but am not. I thought I would share a video of mods that my buddy did to his 996 Turbo, but he is looking at significant power adding.
https://youtu.be/01n9Sy1ld1Q
Is that what you are attempting ? Obviously the timing, fuel mix, boost, are critical in the correct prortions to prevent engine damage.
Good luck, I would like to know if you are able to accomplish a tune.
Cheers