When I enter a spread of say 3 pips
You can only enter a spread during Backtesting … when you do this you are trying to simulate what happens during Live Trading.
If I leave the spread at 0 – what effect will that have on the system going live?
If you leave spread at 0 during Backtesting, you are kidding yourself because when you go Live the broker will be levying a spread on any trade you make.
