Squirt, if you'er going for speed then this is not the plane your looking for. You put a tuned pipe on a 46FX on this bird and your going to be picking up pieces, it'll come apart in the air. This plane is not designed to fly fast and the 46FX alone is more then plenty for doing 3D type flying.

Running a 46FX on mine I only fly at around 1/4 throttle.

Blackie