I like it, but right towards the end there's this higher pitched sound (not entirely sure what it is, it's like sound bouncing off a building as you pass down an alley in a car, know what I mean?).
You have
grrrroooooooooooooooooooooooo ooowwwwwwllll rrrr-krr-rrrr---wlllllll...
Very hard to explain. More noticable when looped 4-5 time. I like it a bit better than the current 109 engine sound I have for the G's, though.
EDIT: The sound happens just as 1 second turns into 2 seconds (on playback).