I know that a lot of you have done it already, but for some of you it will be a future task!
This is the easiest way to remove the Pre-cat in less than 3 (in words three) minutes without bloody fingers and red-hot drills.
Pic 1. Drill an 8mm hole in the middle of the catalytic converter
Pic 2. Screw in a 10mm wood screw with the cordless screwdriver
I cannot insert further pictures to this thread, so
........... continues with part 2