Hi, I have a 97 honda civic with a D15 block and a D16 head...it used to rev @7500 rpm but about a month ago it started to rev @6000 when I was speeding but when the car gets cold again it would rev normal, but now as soon as I start the car the rev limiter is at 6000, did any1 had this problem before?? I did change the dizzy and the ecu but it's still the same