If the outside box is blue and says Soundtraxx then you have the version that Soundtraxx did for themselves.  They installed the full version of the Tsumani.  In the box should be a CD with the documentation and a short quick start sheet.

Okay, thanks for the replies.  It sounds like I had best build a test track and see exactly what my locos can pull.  I had already figured 5 or 6 cars would be the max load.  That fits in with my layout design.  I could plan on running double headers I guess.

Chris

I am designing an On30 layout and I would like to know if a 4% grade is too much for the 2-8-0.