Does engine
suddenly bog
or die?

Does engine
suddenly die or
lose power?

what is the difference between the two


edit: is the difference that if its too rich then it will suddenly BOG
if its too lean it will suddenly DIE

is that right?

yes that should be right.

just remember - always tune engine that is heated to operating temp

I let the motor idle for about a minute then lift up and give it some gas, then drive around 1/4 throttle for 30 sec to a minute.

then i start actual testing

is that okay?