Any Pitfalls of Backtesting???

[everyTHING]

HI everyone. I have EA. And i tried to backtest it. The results were amasing. The profit was great. But this is too good to be true. Im confused. I dont know if i shud trust this results and go to...

 

[Enivid]

The could have been optimized without any correction for data mining bias. In that case, its performance will only be good on the backtesting period.

 

[chief]

so where the result then ?
how can we decide it's good for you or not if we never saw anything of it.