the secret to Tam's system is his injector nozels for the smoke system .. I have 3 of his smoke systems (full pump, battery, setup) and its as good as you can get ..
you can also use a Skywriter (sulivan i think ?? ) smoke pump on Tams injetor tubes, or set up a presurized system (look on
www.tamjets.com for the smoke system, you can see the air presurized set up under the MB339 section)
here is my MB339 with 1 Tam injector pipe, and a air presure fed setup ...
http://www.scalerchelis.com/gallery/albun33
oh yea, if you shoot in the smoke on turbine startup, you get that nice flame thrower evect

(and to all you old men out there, please dont complain about this, i have been bashed and flamed already


)
Wojtek