Unless the laws of physics have changed, there are only two ways to increase air flow through the same size opening. #1 greatly increase air pressure entering the intake side; #2 reduce restricion in the opening-ie: reduce filtration efficiency in this instance.
Of course it's your money to spend any way you choose.
2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA 1SG, retired;PPA,Good Sam Life member."We the people are the rightful masters of both the Congress and the Courts - not to overthrow the Constitution but to overthrow men who pervert theConstitution. "Abraham Lincoln"