I can see quite a lot of oily deposits on the intercooler.
I'm thinking this might be something to do with my restricted performance issues last week.

Should it be clean and dry?

I have searched high and low and can't find any info on changing it, any ideas?

Thanks a lot

have you checked the lower intercooler hoses for splits or leaks, there is one on each side of the bottom of the intercooler. Could be where its coming from.

Probably a cheaper place to start than the intercooler itself. Not heard of many springing a leak yet. Also there are smaller rubber sections of hose near the turbo.

If you can't see any splits on the top look at the bottom ones next  There is nothing that can't be fixed with a hammer😜😜
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Sounds a good idea.

Thank you.