I suppose if the springs were completely worn out then you would lose the few degrees of timing advance the system provides at < 5500 RPM's. The VTC system provides better mid-range torque. The springs drive worm gears that change the orientation of the camshafts a few degrees. or sumthin' like that.
"Straight-line acceleration is probably the first aspect of automotive performance that any intelligent driver gets bored with."Peter Gregg
"We owe a lot to the dragsters. They always break something, figure out a way to beef up the part and the benefit trickles down."Robo
"Not everything that can be counted counts. Not everything that counts can be counted."Einstein
"And now my friend, the first-a rule of Italian driving, [Franco rips off his rear-view mirror and throws it out of the car] what's-a behind me is not important." Raul Julia, playing Franco Bertollini while driving a Ferrari Daytona in the movie Gumball Rally