So you want a little thruster ? Add an emitter in your map : XParticleEmitter=>XEmitter=>XSpriteEmitter=>Emitter.
Then, in it's properties, in EmVisuals=>ParticleTextures, add your flare texture. Use StartingScale to scale it's size. To add movement, use EmSpeed=>BoxVelocity (here you add mins and maxs of speed on the three axis X,Y and Z). If you want to change the color, use ParticleColor, under EmVisuals, and if you want to make it spawn from a zone instead of spawning every particle from the very center of the emitter, EmPosition=>BoxLocation will let you specify a cubic zone of spawn.
Toy a little with these properties and look at the other tabs and parameters. It's pretty self-explanatory if you have a clue how it works, but someone should definitely make a tutorial about it

You must construct additional pylons.