you mentioned that your tach got a little wild after 7k.. this is when your are putting most stress on your ignition components. i am assuming you are making about 325 hp. what are you running as far as ignition is concerned? sounds like a bumt coil. by the way, if you are running aftermarket, is it an analog unit (msd 6al, jacobs, etc) or digital (msd DIS series, accel, etc) . hondas don't like analog. ( crazy voltage spikes!) these spikes will eat up factory ignitors and coils. good luck