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2005 PSM 2.5RS
37 Posts
Discussion Starter #1 (Edited)
Can anyone identify the sound from this clip?

There is a knocking all through the video, but it becomes especially apparent at about 47 seconds in.

I took the audio using a knock sensor bolted to the engine block and routed into my laptop soundcard.

The sound is extremely bad on a cold start, and diminishes (but doesn't go away) once the engine is hot.

2005 RS, EJ253
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