1jzjoey

ok so i have a ka24det, i always put super premium gas in it, but a couple days ago i wasnt thinking and put regular gas into the car mixing it with the sp gas that was already in it, didnt think too much about it after that until now everytime i accelerate the car sputters in every gear bogging down kind of, im losing loads of power, i changed the spark plugs cause i thought that might be the issue but its still doing it, could the gas be doing this? btw im running really rich.