I have both versions of the Big Boy and Challenger. The issue I have with both of these Addons is there is no steam emissions from the turbo generator, pop valves, injectors etc. On the BB no steam emissions from the whistle, however there is steam from the challenger whistle. On the V2 versions of both the cylinder cox do not function with no steam emissions. The original IHH versions work and have very weak emissions. All of my other steam Addons (Gtrax, Cab Forward) function perfectly.
When adding the BB to a new scenario, the tender when added has a challenger number which can be changed.... strange since the flyout box has entries for both Bb and challenger tenders.
I am beginning to believe that the problem is my somewhat low-end system. Any advice/help would be greatly appreciated.