Which Nitto 555 tires, drag radial or street? If they are not drag radials putting the right amount of air in your tires will help a lot. Airing down street tires does nothing good. Neither does a burnout. If you were getting 2.3 60 times you weren't getting good launches, if you haven't already I would think about some suspension mods next, rear upper and lower control arms will help a lot, but IMO 4.10 gears are too much with a blower. No traction, and pulls through the gears so fast you don't really make the best use of the power.
The best thing is seat time, as you practice you'll get better each time. Have fun with it and try different things to see what works best for you.
The artist formerly known as SteedaMatt.