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08-30-2012, 06:40 PM | #1 |
Lieutenant Colonel
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Does anyone hear a whistle sound when letting off the gas? xDrive 35i
Hi all,
I realize I have a turbo car and that a spooling sound is expected, but I'm hearing a repeatable whistling sound almost every single time I let off the gas. This is not a spooling sound really, and doesn't happen during acceleration. Only after. Is this considered normal? Thanks! |
08-30-2012, 08:09 PM | #2 |
Major General
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When you let off the gas, the bypass valve closes and boost is evacuated out the intake. The N55 has some fairly nice turbo noises, although I'm sure some people don't like it.
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