So the chance that my opponents got a quad or full house is responsible for that 7 % decrease.
U have any quick way to estimate equity taking into account the quad or fullhouse possibility?
Well, I think the quad is only responsible for a 1% drop in equity.
Another T or 4 could hit the board. There are 6 of those cards in the deck, which should have 45 cards remaining. Therefore, the probability of one of those cards hitting on the turn is 6/45 is roughly 13%. One of those cards hitting on either the turn or the river is (6/45)*(39/44)+(39/45)*(6/44)+(6/45)*(5/44) is roughly 25%.
So multiply your equity without the full house with 75% (100%-75%) and you get a number around 25%. This seems to be close to the answer I got from the equity calculator.
Anyway, you're already an underdog in this scenario. A flush draw is nice, but chasing the flush is only acceptable if you are confident that you can get your opponent to fold *or* your opponent gives you good pot
odds. I believe that if your opponent bets 1/4 of the pot (or less than that), then it is profitable to chase the flush. Of course, if I were them, I would be betting at least 1/2 of the pot to punish flush chasers, as well as value-betting my set.