Today a guy at my shop was telling me about adjusting the Fuel Pressure Regulator on my car. What a difference! It feels like I have gained like 5 extra horsepower? It doing really well now. I wanted to know how much is to much. Its at 45psi right now. It was at 20psi. And how do I check to see if my fuel pump is not a stock pump. Is it inside the hatch part of the car? Where the wires run down inside this plate that my back seats goes over. Its a 88 civic hatch.