I have an 88 Crx Si with a first gen B16 swap. It is throwing code 23, which I know is for a knock sensor. I have tried resetting the ecu, which cleared the code until the car got to normal operating temp. After that it came back on. What else should I check? I'm running a PR3 ecu, can I just unhook the knock sensor, or does it need the signal from it? I would like to get this resolved quickly after driving the car without the code and seeing how it is supposed to run. Thanks in advance.