i have a question on timing, do i need to use a timing light when moving the cam sensor or can i see it in the scanmaster? its a dumb question but i have never timed one of these engines, i have worked on mercedes car for ten years but not on gns. i want to see if messing with timing helps me with my hesitation on acceleration, feels like it wants to die if i want to punch it from a dead stop. it has a reds 93 chip installed.