Quote:
Originally Posted by WARP TEN
.................. The problem I have with the Corsa is that under load at 2,500 rpm I hear a loud, annoying “fluttering” sound that I have described in the past as hearing individual cylinders firing, with the pulses reinforcing each other. ..........
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See now I'm going to be listening for this as soon as this T-storm rolls through. I can't say I've ever heard it. But then I don't spend much time below 3k

I've always had an ever so slight peak resonance at 3.1-3.2k