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Well put it this way, it doesn't sound like and 8 nor a 4, it sounds like a combination of the two, slightly high pitched with a nice rumble. In short imagine what your car sounds like, now multiply that by two with a slightly deaper sound, that's what you get. They have some sound clips somewhere on this website, but hell if I know where they are. No they sound good all day everyday, kinda gives you something to be proud of when you put the key in the ignition and turn over the engine.