My DeWALT impact wrench DCF923B has a feature called Precision Wrench™. This is defined elsewhere as, "In Forward, the tool will pause before impacting to help prevent overtightening. In Reverse, the tool lowers speed when fastener is loose to help prevent run-off."
To make this useful do I need to know the max-torque of the gun before it impacts? Will this be useful for a mechanical/automotive job that requires between 32 lb/f - 85 lb/f. Can I simply rely on Precision Wrench™, and not use a torque wrench?