i have a 91 integra with a b18b in it.. it has 128k miles, ive literally changed oil every 3000miles, done regular tune ups, valve adjustments, and timing belt has been changed..and ive taken very good care of it.. so i know nothing is going to break on me from lack of maintanence... I am wondering what kind of RPM i can get out of my engine safley.. What would i need to change? currently the rev limiter is at 7500.. How do i get rid of the rev limiter? do i change my ecu?