Interesting comments.... if the tester had bothered to read the technical data sheet he/she would have seen there is a max risk parameter which stops the trades out if they reach a pre-defined % of account equity in loss....
The reason the arb trades don't use stop losses is twofold - 1) the vast majority of retail FX traders lose their money by getting stopped out - so letting the arb positions breath increases the chances of getting a profitable net position dramatically.
2) The system has a max risk parameter - thereby underpinning the trades with a risk management strategy.
Stat Arb is a complex business so if novice traders expect to simply drop an MT4 EA on a chart and expect it to make money without any effort... unfortunately they are somewhat deluded... FX AlgoTrader market semi-automated trading tools for traders who know what they're doing. One thing I can certainly guarantee... if you're looking for an EA which will make you consistent money without effort or knowledge on your part... you're not going to find one! Sorry to be the bearer of bad tidings but that's the reality ... 95% losers... 5% winners... take your pick which camp you want to be in...
Needless to say the original posters will be long gone 6 years later..... let's see
For anyone serious about their trading you can take a look at the stat arb system on the FX AlgoTrader website.