diff --git a/balloon.lua b/balloon.lua
index 2b25655..9f06e49 100644
--- a/balloon.lua
+++ b/balloon.lua
@@ -3,7 +3,7 @@ local mod_path = minetest.get_modpath(mod_name)
 
 me = {
     lift = 4,
-    speed = 3,
+    speed = 4,
     fuel_time = 10,
     speed_mult = 4,
     i = {},
@@ -113,9 +113,11 @@ function me.update_sound(self, dtime, forward)
 		and self._sounds.engine_stop.time_elapsed == 0 then
 			me.sound_play(self, sounds.engine_stop, self._sounds.engine_stop)
 		end
-        if (not is_thrust) then
-            me.sound_stop(self._sounds.engine)
-        end
+		if not is_thrust
+		or (self._sounds.engine_stop.time_elapsed == 0
+		and self._sounds.engine_stop.playing) then
+			me.sound_stop(self._sounds.engine)
+		end
 	end
 end
 
@@ -305,7 +307,7 @@ function ship.on_step(self, dtime, moveresult)
     local speedboost = 1
     if self._fuel > 0 then
         self._fuel = self._fuel - dtime
-        speedboost = 2
+        speedboost = 3
     end
 
     if pi then
@@ -355,9 +357,9 @@ function ship.on_step(self, dtime, moveresult)
         v.y = v.y * 0.95
         v.z = v.z * 0.8
     else
-        v.x = v.x * (1 - (dtime * 0.5))
-        v.y = v.y * (1 - (dtime * 0.5))
-        v.z = v.z * (1 - (dtime * 0.5))
+        v.x = v.x * (0.98)
+        v.y = v.y * (0.98)
+        v.z = v.z * (0.98)
     end
 
 	local wind_vel = vector.new(0,0,0)