You should not have touched the n75 screw at all. Period. End of story.
In fact, you should unfriend and block whoever told you to do that.
Is that going to mess up any future tuning?
I bought a cheap replacement off ebay, but it only boosts 9lvd or so even though same part number.
I also heard that the original part “c” part # was repalced by an “e” valve.
So i bought an oem e valve lying around. Im scared that it wont match up with my ecu either.
I guess i could get a matching used part from matching car....