Here's one for ya.

[olderndirt]

The MilViz 737 comes with wing tip vortices and early jet smoke.  In the aircraft.cfg there's no mention of vortices and a section about smoke is already commented out.  I've read that this stuff is hardwired into the FSX SDK - wondering if there's any way to remove?

[pivo11]

Ya got me.  Maybe somewhere in "Simulation Variables".  msdn.microsoft.com/en-us/library/cc526981.aspx