37k miles, what crickets?
Simple solution to funny noises, keep right foot planted on floor.
Edit: I'll add more horsepower when I figure out how to maximize the 200 it came with, still a long way to go and I've already passed plenty V8's and flat-sixes and I6's and turbo I4's on track and through the cones.
If you can't go fast with 90 horsepower, 900 ain't gonna help you.