If possible make greater sounf for sector jump and system jump.

Suggestion :

Engine can accelerate gradualy and a "bang" before the jump.

Sector jump: agreed.

System jump: actually I like this quiet. The animation gives it a nice, gentle feel, like ripples in a pond. I don't think it needs any sound.

The sector jump sounds good.

System jump should have at least a small amount of noise though. It should be small because, yes it is a calm kind of thing, but still some noise would be welcome

You mean like this one I made for an identical thread back in July?

http://genin.org/warp3.mp3

Yeah ! Cool :-)

But if you can remove those "pop" during the acceleration ?

Since I don't have the original file, damn near impossible.

Damn :-(