I saw 14.7 psi max, all stock if memory serves me correctly. 17 psi max, with a 65mm pulley. 19 psi max, with a 178 crank pulley and large manifolds. 178 stacked with a 65 .... I can't remember but the overboost code was thrown so 22 psi or more. All at close to sea level and over 80º. I have no experience with a 185 or the Crossover manifolds. I'm still on the fence considering the Crossovers.

Les