Adding Engine Smoke

[jake-m1900]

I assume this wasn't added due to the impact on FPS?
But the real aircraft puts out a light line of some darker smoke at higher power. You can see this during this display
https://www.youtube.com/watch?v=6ccj7MBbY1k

I thought the wingtip vortex effect added a nice element of realism during tight turns maybe this is an added enhancement