Here's the situation: The car was running fine, I then installed an Autometer oil pressure and water temp gauges. After hoopking them up, I start the car and I automatically get a CEL. I went and had the code scanned and it was p0300 random/multiple misfire. I go home and let the car idle, you can hear it missing. I know that gauges are hooked up ok becaue they read what they should and anyways they wouldn't make my car misfire. I checked all connections related to the ignition system. I have done research and have installed new coil packs, plugs, new FRPP wires, tightened the crank bolt to 130lbs (was already tight), put new gas and dry gas in and it still misfires!!! WTF!! I am out of ideas, my last hope is to call my dyno tuner and see what they say. Anything I didn't check or should check. HELP!!