If your data allows it would be nice to be able to screens for RSI where:
RSI = 100 - (100/ (1+ RS) ) where
RS = Average of x days up closes / Average of x days down closes

Any progress on your new backtester? (Waiting with baited breath....)

The current (old) backtester

The current (old) backtester doesn't support that, but I've got a new backtester I'm working on that already supports this kind of thing. Stay tuned.