Drag- Make sure you launch your car (Have your rpm's already in your powerband... ie mine is 3k) This helps with take off and shaves halves of seconds.
Auto X- No idea, ask racer :)
Nice! I'm glad to see so many success stories with adding in a 3 guage pod for the Mz3. Looks like I'll be doing this once boosted :).
Nice job though looks awesome!