No trading system is foolproof, but for eg: your stoploss is of Rs.5 and your Gain is of Rs.10 then this system will be the best system, you can ever have.
To check the consistency of system, Never go for number of right/wrong signals but check value of right/wrong signals.
In my view, if system gives 5 wrong signals of Rs.1 each and 1 right signal of Rs.10, then system will make you crorepati in 2 years.
Always trade,keeping emotions aside,never follow heart,always follow brain during intraday trading
Backtest this system 100 of times, if it proves its worth, then follow blindly