908ssp, can you post a picture of the filter?
No sorry. It is a pretty big filter the folds are really deep so there is a lot of surface area. But I would expect that a freer flowing filter might be made and that would be the only thing that could make this airbox better. See all those bars running up the sides. I suspect that they do more than make the box stronger and quieter. I'd love to hear from the designer but they probably help direct the air up into the filter. A lot of engineering went into that airbox. that said I removed the Helmholtz generator that was attached to it. I doubt it will make and difference except to make the air box a bit more noisy.