Depends on what you mean by "map out" i can limit boost versus RPM to map it out that way, there is also the possibility of altering the cams to allow the engine to flow more air for the same pressure.

Sadly though as ive NEVER seen this turbo on this engine before, its all guesswork based on what happens on YBs with that turbo

Im not too bothered if i have to limit boost until high RPM, i wont mind if i dont get full boost till 6000rpm+ really, but its just annoying that for no real extra effort and only an extra grand or so in cost i could have built a bigger CC unit instead with this taller block and known that surge wouldnt be an issue.