I have a OBDII GSR swap in my 97 civic ex, and its throwing a code 45 - Too Rich too Lean. I seem to have intermittent problems and the car stumbles from time to time. I've checked the spark plugs and seem to be wet with fuel. Could it be a set of bad spark plugs? A bad distributor? Not enough spark? Since its an intermittent problem could it be a loose connection at a sensor or at the ecu that could cause this? I here from my buddy that a MSD ignition may just solve this problem for me, he also suggested getting a Fuel reg w/guage. Any ideas as far as a faulty wire harness or sensor that might cause similiar problems?