Problems using RSI strats on Heiken Ashi bars?

Just something that MAY help some in thier trading. When using the general settings for RSI(3) and using Heiken ashi, i notice (In small time frames(5 min) and in some cases larger ones(1h)) that SELLING when thier is a CLEAR cross over the 70 threshold tended to produce more wins, more so if ya wait a extra bar or 2 to close and then closing when below 30 or whatever you decide as your close trigger.
If using bars or candlesticks the opisite holds true (Buying above 70 produced more wins for me atleast and cloisng above 70)
still doing more testing and junk so just random ideas lol enjoy and happy trading!