what I would like to know is if it's a noticeable difference between stage 1 and stage 2? It sounded like you did not have stage 1 installed since you noted you ran the car for 5K without any tunes? I'm also curious to see what bb2405 has to say about it once he has it installed since he's migrating from Stage 1 to 2.
Btw, off the line take off is the one thing I dislike the most in this car (and did not feel like stage 1 helped). I feel like it literally takes about 1 or 2 seconds before the car actually takes off...