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Had a spare headlight so thought I would try the intake mod
I used a 3" duct and 6" trumpet which I trimmed to suit the shape of the blob light.
Pictures speak for themselves
In a different thread I saw people mention they used a subwoofer trumpet. Quick google search and you can get the size you are after. Disclaimer though make sure your lights work so you can see and others can see you. Don't want people thinking you are a motorbike and realise too late.
Nice one thank you. I did have a think about that too, was considering Led bulbs for mine, might look at using the trumpet with a wrx fog trim instead as it's the same size and won't require the loss of my main beam.