power

Hi, my 1uz runs from 0-100 in more than 10s (11-12s) but to my understanding it should be running close to 7.0 seconds flat. I was wondering what i could do to bring back lost power and make it run as good as in the begining. The car even struggles to push at speeds above 110km/h. Seems to have...

Who has dynoed lately it would be great to see how much power out of there projects and how they managed it ?