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Originally Posted by silicon212
By 'knock', do you mean a detonation-style ping when the engine fires? This is normal in MOST engines, even in my car. Even in my old '72 Impala of 20 years ago.
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Yes, it's always a single "knock", and it's that ping sound you hear on TV shows when someone runs out of gas somewhere...
I could have sworn mine never did that before. And it doesn't do it with my home-built PCM (only thing I can think of, is that my PCM doesn't use a knock module like real PCM's, mines all ADC based and uses audio filters via software)