I was thinking of taking them out. But i do think it makes a differnce on the low end. And as for the extra flow it give you i figured it would make since to have to paths for the flow. one side front three other side rear 3. wouldnt taking out mess up the flow cause all it is a open while that would now be between the runneres. . to get any result i would think you would have to port the middlte of it out and make the runners are conect compared to them being behine a wall with a small door. Does this make since? Im reasearhing this as we speak. Any idea's or info would help alot Thanks Xdreamerr