the accord ecu will run the h22 somewhat safely upto about 5000 rpm. try it. how does it idle? is this a 96 or newer h22? you can adjust timing on the earlier ones and if it is off much, you will get what you are describing. btw, how long have you had a h22? they feel just like a f22 does until 5500 rpm. then they scream.
shaun