If your running very light mods. I don't recommend a burnout without the appropriate tyres and drivetrain upgrades. Even though im in a manual, my very first pass cooked the stock clutch after a decent burnout and I could barely move off the line before crossing the line in an 18 or 19 sec with a very sad face.
Your not going to gain anything major without doing something major. Just remove anything that doesn't need to be in the car, even the 2 stage boost mod will likely not even register on the time sheet. All your time will be found in a clean run with the right launch.
I found my biggest gain by far is my Mickey Thompson tyres. Even my Turbo upgrade didn't do much (180rwkw upto 245rwkw), What I gained in top speed I lost in the first 60 foot. Minor gain but not enough to warrant the price tag.
Enjoy it though, I aint been for a long time and am just starting to get all the urges again. Certainly fun and very easy to get into.
Luke