Question about Turbo whistle on decel, is this normal?

Nissan 300ZX technical discussion forum: Maintenance, performance, installations, modifications, how-to's and troubleshooting.
Blurr
Posts: 112
Joined: Fri Apr 23, 2010 2:48 am
Car: 1990 300zx Twin Turbo JDM Motor Swap

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Just wondering if this is normal. The turbos do not whistle on boost, but on decel they whistle. Is this normal or is there a vacuum leak somewhere?


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