Two weeks ago I ran a 7.5 1S V3 using a GT2.0 LPF with 323 stock firmware on our local big track (225ft straight). Car was very easy to drive as the bottom end was "soft" enough for easy control (I usually run 17.5) and the top speed was on pace with a 4.5 running non-boosted firmware. Motor temps were a max of 170F with track temps of 135F.

Another racer was running a boosted 4.5 and I must say it made my car look like it was standing still at the end of the straight. Crazy fast, but harder to control. Here is a link to round 1 qualifying: http://www.youtube.com/watch?v=sHp3L...eature=related

Yellow car is me, Pink car is the boosted 4.5. I was 2 teeth undergeared here, so the speed at the end of the straight was a bit slower than the later rounds.