Also, those newer vehicles with air boxes containing the filter element can
be modified by drilling a large hole or two in the lower rear area of the
airbox. A 2" or so hole saw does the job nicely. Remove the box
before drilling any holes to prevent damage to fenderwell. Since the
filter element is above the holes, all incoming air will be filtered. Most
of the new air box designs include "silencer baffles" to keep intake roar
down. These baffles are restrictive, limiting air flow, and a little roar
never hurt anyone. All this modification costs is time, and it's worth
about a mile per gallon, depending on the weight of your right
foot. I've done this on a couple of my newer rigs and it works.
Joe Reiss
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