Assuming it’s a Profec B Spec II, I believe the set is a percentage, try turning it up incrementally.
Turn the gain up incrementally as well after you set the initial percentage. Mine is set to 18%. Also you have your wastegate set to open at 15(psi?). If that’s where you want it then cool.
Your warning is where you want it to engage limiter IIRC, and the limit is what set percentage it’ll reduce to after them it hits the warn, so it should be lower than the warn.
My hi/low settings as follows:
Low…
Set: 28%
Gain: 18%
Set/gain: 0.85bar, about 12.5psi (when wastegate starts to open)
Warn: 1.2bar (about 18psi)
Limit: 10%
High…
Set: 50%
Gain: 18%
Set/gain: 1.05bar
Warn: 1.4bar
Limit: 15%
These settings work for my particular build. The low settings are nice. Good response and caps out at about a bar of boost (15psi). Would not recommend my high settings unless your engine is built and tuned to handle it. Here is the manual:
http://www.greddy.com/upload/file/PRofec_Bspec2.pdf
Hope this helps.
Mike