My Cb7 (1990 Honda Accord Ex) is running rich. It was running rich with the engine I had orignialy in it. When my brother took over it, they bought a whole new engine, and didn't take any of the sensors off the old block. So there was two different sets of injectors and sensors in the same car and it's still running rich. My question here is: Has anyone came across a ecu that makes a engine run rich just from simply being old and or malfunctioning? I realize since I haven't owned this car from brand new there is possibly a re-mapped ecu in it. To what specs only god will know.