Help strange noise AAZ

[jpotsopt]

Hi guys,
recently i applied an 1z intercooler on my aaz 1.9td and the car started to make a strange (looks like a metallic sound) noise nearby 2500 rpm but then close to 3000rpm it stops...

i'm leaving here an example (0:04)

https://www.youtube.com/watch?v=Zg4ORbXa-xU

i lifted the front up to check where it was coming from but it stopped, and then on the road it started again...  thoughts? it's my daily car so i depend on it

[vanbcguy]

Hmm can't really hear anything? Any chance you have a boost pipe pressing on something?

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