Acceleration Top Speed Maintained Top Speed Things you can do to increase Top Speed: 1) Racer High Speed Airframe 2) Fly Upside Down (or Sideways) 3) Hold Down <Ascend> Key While Flying (Pitch to maintain level flight) 4) Use Afterburner 5) Aim Toward The Ground Things you can do to increase time of Maintained Top Speed: 1) Use External Afterburner Fuel Tanks (increases both fuel replenishment and fuel capacity)