i use super gas,i changed plugs ngk laser.
lost of power on my v6 coupe 241hp. on 2005 Honda Accord
seek diag and est as this could be several issues
2 more answers
Is the check engine light on? Did you change the plugs yourself? If so , was the plug on the rear bank towards trans , oil fouled?
did this happen after you changed plugs? either way, find a mechanic