i was wondering if i make the gap on Bosch Super 4's bigger by 1millimeter will this give my car better performance and take off. And also is 1 millimeter too big a increase?

default gap is 1mm....doubling that is a fair increase....i dont think you will notice too much in performance increase :S

Increasing ur spark plug gap puts more strain on your ignition system and will wear it out quicker :roll:

Yeah i read about this in Zoom not long ago. The theory behind their view is sound, i think. But they reduced the gap so there is less chance of the electricity finding an easier path (less resistance), than the end of the spark plug. So really widening the gap shouldn't help.