I was a bit surprised by that peak boost number as well. My frame of reference is my Saab 2.8L V6, based on the GM High Feature engine. It has a Mitsubishi TD04-15TK twin scroll turbo. 280 HP, 295 ft/lbs stock, at around 12 psi. I have since tuned it to a claimed 320 HP, 400 ft/lbs, at around 18 psi. I know psi can't…