How to Optimise an EA
A careful walk through the MT4 Strategy Tester optimiser, the metric to rank by, and the over-fitting trap that makes backtests lie.
6 minRead → Expert AdvisorsHow to Run an EA on a Mac
MT4 and MT5 are Windows software. Here are the real ways to run an EA on macOS — VPS, virtualisation, wrappers — and which one suits live money.
5 minRead → Expert AdvisorsHow to Update an EA
Swapping in a new EA version without losing your settings or open trades. What to back up, how to keep trade continuity, and the order to do it in.
5 minRead → Expert AdvisorsHow to use the MetaTrader strategy tester
The MetaTrader Strategy Tester is a built-in tool that lets you run an Expert Advisor against historical price data to simulate how it would have perfor…
2 minRead → Expert AdvisorsWhat is Parameter Optimisation?
Parameter optimisation tunes an EA's inputs in the tester to maximise a metric. How it works, and where it tips into over-optimising and curve fitting.
5 minRead → Expert AdvisorsWhat is Slippage in EAs?
Slippage is the gap between the price your EA asked for and the price it got. Here's where it hits automated trades, a worked cost, and how to limit it.
5 minRead → Expert AdvisorsWhat is a Breakout EA?
A breakout EA trades when price leaves a range. False breaks and news spikes are the two risks that turn the strategy against you.
5 minRead → Expert AdvisorsWhat is a DLL in MT4?
A DLL lets an MT4 EA call external code for things MQL4 cannot do. That capability is useful and a real security risk. Here's both sides.
5 minRead → Expert AdvisorsWhat is a Drawdown Controller EA?
A drawdown controller caps loss by closing or pausing trades at a limit you set. Here's how it works, a worked example, and its blind spots.
5 minRead → Expert AdvisorsWhat is a Lot Multiplier?
A lot multiplier grows position size after a loss to recover it. Here's the recovery maths, why the curve looks safe, and how it blows up.
5 minRead → Expert AdvisorsWhat is a Money Management EA?
A money management EA sets lot size from risk, not habit. Here's the sizing formula, a worked example, and what it can't fix.
5 minRead → Expert AdvisorsWhat is a News EA?
A news EA trades the seconds around an economic release. Here's how it works, why execution falls apart on the print, and what to check first.
5 minRead → Expert AdvisorsWhat is a Scalping EA?
A scalping EA chases a few pips per trade. That thin edge is fragile to spread, slippage and execution, and often dies on a live account.
5 minRead → Expert AdvisorsWhat is an EA Input Set?
An EA's input set is the parameters and .set file you feed it. The settings decide the risk, so the set can matter as much as the EA itself.
5 minRead → Expert AdvisorsWhat is an Expert Advisor (EA)?
An Expert Advisor — usually called an EA — is a piece of software that runs inside MetaTrader and places trades automatically, based on a fixed set of p…
3 minRead → Expert AdvisorsWhat is backtesting?
Backtesting is the process of running a trading strategy on historical price data to see how it would have performed in the past. Instead of risking rea…
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