Metallic rattle on WOT acceleration

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texevora

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Nov 30, 2017
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When accelerating with close to or full WOT, there is a metallic rattling that comes from what i believe is the lower part of the engine bay. It is very brief in nature (split second) and happens a few times throughout the rpm range if accelerating from 0-80mph for example.

I thought it might be wastegate rattle, and i installed the Hillman springs on the wastegate mechanism as recommended by some on this forum and various Youtube videos, but that did not fix anything.

Any ideas what might be causing the rattles?
 
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