Recently did Stage 1 on my A7. No dyno or track numbers, yet, although I may go to the strip tomorrow.

I went with them because of the a) flash at home b) ease of upgrading flashes c) remove speed limiter d) they have a functioning website

I'm sure it's comparable to most other Stage 1 tunes. Anything over stock is going to feel amazing.

I recommend buying directly from IE, though.