So there is a drain for the XXI box? I too had an issue with that as unfortunately it does rain in Australia sometimes lol. That moonlight box looks to have adopted a pretty simple fix for that.
I wonder how flow testing is done on these boxes, would be great if someone could do a comparison of stock air box with stock lid, then petrol lid, then petrol lid with modified 4" inlet etc.
I wonder how flow testing is done on these boxes, would be great if someone could do a comparison of stock air box with stock lid, then petrol lid, then petrol lid with modified 4" inlet etc.