if you're already spinning 2,700 rpm's you don't need to turn your govenor up, you need to swap out the rear end gears
i turned up the govenor on my dt360. mine wouldn't turn over 2300 rpm when i first bought it. Anyhow.....It's easy to turn up the govenor, but 3100 is redline for that motor and you're pretty close to that already.
That dt466/mt643 should be really happy with a 4:10 set of gears!