Remove the top cover,
Remove the filter
Remove the bottom part of the air box
Rip out the 'baffle box'(which is the small box located in the offside wheel arch that connects to the bottom of the air box) and throw away.
Drill as many holes(and any size) as you want in the bottom section of the air box
BUT avoid drilling the side that is next to the engine, to prevent hot(est) air getting in.
Replace this part that you've just drilled
Replace the filter
Replace the top/lid of the air box.
Go drive and enjoy the sound.
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