I originally didn't want to adjust it at all, but then a "tuner" told me that at least a little (0.500 - in high load) would be good. (And I was also "motivated" by the posts and software of a few people who also modify it a bit.)
I did it that way, but now I'm wondering in retrospect if it was even effective and I'm going back to the original values.
Because I thought I don't really know how it would behave in bad values.
I have full 3" exhaust, k03s + spring mod, BAM injectors and better air filter in ori filerbox.
Aforementioned "tuner" probably belongs to the 2D +30% faction of "tuners" who give this entire industry a bad rep. my advice is to stop talking to him before he teaches you some really nasty shit that will get you in more trouble than it's worth.