Try this thing on banknifty.
Go Long on 1st min candle high break.
Stop loss 20 points from that point. Target 30 points (seems small but try it.)
Go short on 1st min candle low break.
Stop loss 20 points from that point and target 30 points.
If trade fails, do the counter trade after your stop loss hit with same 30 points target and 20 points stop.
Do not trade if signal comes after first 5 min.
I know, risk reward doesn't seem to be good but at least you can back test this thing on bank nifty futures.....
You are enough intelligent to make this thing more powerful.