The Spread Controller alters the spread used in MT4 backtests, without needing to manually restart MT4 and disconnect it from its broker. You run a simple script, enter the revised spread to use (which can be downloaded from MTI's spread data), and the Spread Controller manages the rest of the process for you.
MT4's strategy tester uses the current live spread at the time a test is started. There are two serious problems with this approach:
Version 2 of the Spread Controller offers simple, quick control over the spread used in each backtest. You turn on the Spread Controller by running a script (on any chart) when you start MT4. After that, whenever you run a backtest you will be prompted to change the spread which is about to be used.
In the new version of the Spread Controller there is no longer a need to restart MT4 after each change of spread, and no need to disconnect MT4 from the broker. All you have to do is run one script, and then enter the spread figure which you want to use at the start of each backtest.
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