That too. No this is for real. I had a hell of a time making over 10-12psi. A few knowledgeble folks on this site suggested that prochargers really have to be tightened down past the factory guidelines. When I followed that advice boost jumped considerably. My boost gauge is mechanical so it wasn't datalogged but I saw it go over 16 at a quick glance. Blew the coupler right off too. Datalogged inferred map is 26 and the increase in pressure drop across the injectors was 20+ (almost 60 total) but I think the truth lies somewhere inbetween. At any rate I can no longer do a second gear pull past 5500-6000 rpm on the highway because the tires just boil once the boost builds. Third gear is just too dangerous.
You should talk Marc into having a dyno day in the near future.