Siger Texmap - Scratches
Siger Studio have released a free texmap for 3ds Max that applies random scratches to the surface of objects.
Map Transfer is a free 3ds Max and Thinknig Particles tool that converts color information into a transformation.
Create Rocket Plume Using 3ds Max Particle Flow - Tutorial
Pete Draper has a video tutorial on how to create rocket plume using Particle Flow in 3ds Max.