I installed a supercharger on my 2003 BMW M3
. I did the required break in period and then I attempted to make a pull in 1st and 2nd gear. In 2nd gear, I hit 7500rpms, and then the car immediately started running rough. I thought it might be my spark plugs, so I replaced them with copper ones, then I did a fuel pressure test, and the fuel pump came up bad, so I replaced the fuel pump, as well as the fuel filter, fuel pressure regulator and throttle position sensor.
Car starts, but still runs rough, and sounds as if it has cams, which it doesnt. Car drives, but lots of shaking, and rough under acceleration. I then ran possible codes, and all ignition coils came up bad. So I replaced them, and then the car wouldn't stay running. It will start, but will die immediately. I put my old ignition coils back on, and then it starts and stays on, but continues to run rough.
What is the problem?