the VK45DE engine in the Infiniti Q45 & M45 generates 340hp & 333 lb-ftMemphis4x4 said:Great article amati5. It looks like the Inifinti engine they reference makes 340hp while the one that made it into production for the QX56 only makes 315hp. That's quite a drop. I wonder if they detuned it for non-premium gas use and thus the HP drop?