The Z06 MAF has no screen, I guess the Corvette guys are
OK with just making sure their air filter is properly seated
and don't seem to cry much about debris.
There's way more than 0.07HP hiding behind the "screen".
It induces a lot of pressure drop at high flows. A stock
motor with stock shiftpoints and restrictive exhaust may
not show you much. But by my measurements, at less
than motor flow rates, the screened MAF is as much pressure
drop as the stock lid while the descreened MAF has too
little to measure (<1/16" H2O). Everybody changes out the
Do not buy "MAF ends". Buy a junk MAF, and pop the screen
out of that, and swap over. Then you can go back if you
don't like it.
Of course this has all been said time and again. Search is
your friend, you don't have to sit and wait for people to
repeat old news to you.