Welcome Dash!
Here's how I describe it to friends (and Rich step in if I'm wrong)...
Consider a scale of 1-10, 10 being totally balls out and potentially dangerous to longevity. Ford sends us these cars at a 6.5. It's good, safe, and best of all, it lasts a long time. What Livernois does is with the 4+ 93 they turn the dial up to 8. Very respectable, quick, and still very safe.
Now, 4X 93 (with 3 bar MAP sensor) turns it up to 9.5 BUT does so while still retaining the safety and longevity of the engine.
Consider though you're going to floor it more with the tune so longevity certainly isn't maximized. And just by turning up the boost, trans pressures, etc you are also causing more wear than if left stock. It is still safe but understand your squeezing more from that V6.
LME cares about their work a whole lot and will not give you (or anyone) a tune that will blow a motor.