Can you explain why the base Levante V6 can 'only' be tuned to 410hp from 325hp? Where as the Levante S starts at 410ish and can go near 500hp? Are there components (cam shaft, turbo props) that are different between engines? What is the max tube the base V6 will handle? Can you do it?
What we should find out first if whether this will void warranty because these days its becoming easier for car makers to detect things like this. Maserati isn't Toyota so when something goes wrong... it can go terribly wrong!