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Discussion Starter · #1 ·
Anyone ever have a vaccum line collapse under boost and cause a squealing noise?
 

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No, but boost leaks at couplings can squeal. Didn't you just do a FMIC install? I'd go over all the hose clamps again when the engine has been running for a while and the couplings are all hot and soft.
 

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Discussion Starter · #3 ·
Squeal started before fmic install after 18t was put on
 

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IDK but a vac line won't collapse under boostm it could leak though, have you done a thorough boost leak test?

Or do you think it's just the turbo whining?
 

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Cold weather squeal

I notice a turbo "squeal" when the air temp starts to cool. The other day we had a cool summer night and then the squeal came back. I'm not sure if your issue is temp related.
 

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check the charge pipe hose to the turbo, also the did you use stock turbo pipe? i see that you have snaab there, so check also the hose that join the intake with the turbo.
 
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