Quote:
Originally Posted by Nmbrsix
Do you notice if it happens only at constant throttle vs. acceleration? Is it only heard at specific speeds?
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It occurs at any speed, any throttle position. I spent almost an hour on the road yesterday and could not nail down any pattern to the noise. It's very brief, only lasts for a second or two.
Before I replaced the regen valve, the noise occurred whenever I held a constant throttle around 3000 rpm. It would go away as soon as I changed throttle position. Seems replacing the regen valve fixed that.