Thanks . Here is some of my experience which maybe useful or harmful.
RSI with 2 day period maybe useful.
note: RSI(i) means the 2 day period RSI value on the i day.
Here is a intraday strategy based 2 day period RSI I have tested :
RSI(i) < 1, get long position ;
Stop loss -1%;
RSI(i) > 95...