The most power made by a honda/acura engine is a tie. Both the NSX and the new Acura RL have a V6 that makes 290HP. They are different engines however. And by the way, no accord makes "close to 300" hp. 240hp is correct. The highest output 4 cylinder they make is from the s2000 and it makes 240hp. The RSX is next up with a 210hp 4 cylinder.