Don't get too worked up about the boost figure, its all about flow rate at a given pressure, if you have all mods listed and a healthy block giving you plently of suck then the pressure is not building as much in the manifold(where your gauge reads it from) and is gettig into the engine faster. Don't forget you also have a geater volume to fill with charged air, so you may feel its lost some of the initail torque that the standard G40 setup gives.
