that command is a simple one that disables both warp and impulse trails, but only the standard ones. there are a lot of trails that were previously taken care of by the texture method and i haven't gone and looked for the others since that got rid of most of them. I have this in my keybind file: F8 ...

/dynFxSetFXExlusionList "Cfx_Ship_Costume_Impulsetrail_Standard, Cfx_Ship_Costume_Warptrail_Standard"