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Hello, I’m looking for some advice.

I’ve started to get a loud whistle from the turbo. It sound like a jet engine when I’m on boost.
Low speed I seem to have lost no power but I jumped on the motorway and had nothing 60+. Whistles the whole time and its slow to get up to speed. Once at 70 and cruising the whistle goes away.

I’ve been under the bonnet but not 100% sure where to look. If anyone has pictures or can describe where to look (what pipes to check) I’d appreciate it.

Thank you.
 

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That whine could indicate a boost leak. Check your boost pipes for any signs of air leaking (tears, loose jubilee clips). Also have a good check over the intercooler for boost leaks. .

In the unlikely event, it could be down to an even more serious problem - a failing compressor within the turbo itself.
 
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