1997 Honda Civic Ex, (the one I traded my CRX for ) Here is the problem, when driving (under moderate acceleration) it will then act like I let off of the gas (some times I hear this odd noise like detonation or something and it will make like a backfire pop from the intake). Most of the time I will just have the performance loss and it will come back but it is annoying, destroying my fuel economy, and I worry it would lead to worse things. The only thing I did to the car was put a short ram intake on it (I had it laying around with a re-washable K&N Filter and didn't feel like replacing the stock one. I replaced the spark plugs, plug wires, distributor cap and rotor button, fuel filter and I even readjusted the valves back to factory specs (they were really loose, it may have made a little improvement but it definitely made the engine quieter) ^_^ Questionable: When I took the old plugs out it took A LOT of alluminum with them from being cross threated badly (I hate the previous owner), i got the new ones in but I often worried maybe this could be a factor ( not enough compression). I'm paranoid that I'm going to take one out and the head will be to stripped out to put another back in. I have received the cel codes 82 & 83 but they don't exist, I went to advance and they said "Random Misfire 1" I have gotten the cel code 54 and checked it and it seemed to be fine, cleared the ECU (waiting for it to pop back up). The only things I can think of is maybe the timing is off? Or maybe the injectors are weak/clogged (but that wouldn't explain how the power comes and goes would it) Any advice or insight would be greatly appreciated, sorry for the long read.