For a long time now, my acura integra 94 redlines at 5 thousand now. First it was at 7 thousand. I don't know how to fix this problem. At first, I put in the power chip I bought in ebay and plugged it in the AIT( Air Intake Temperature) plug and it was suppose to give me some horsepower. After putting the chip in I tested it, it turned out okay. Later, when i unplugged the chip and put back the stock one in...I notice that when I floored the car it redlines at 5 thousand. This happened a long time ago. I don't know how to fix it. I tried to reset the ecu in the engine box and I've tried to take out the battery wires for a long time...to see if it will reset...but no results...HELP???