Dont shoot the newb! MAF screen question......
09-20-2012, 01:39 PM
#21
Staging Lane
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The "screen" works by creating local turbulence in each
of the little channels. The square-law (or higher order)
drag is what evens out the airflow. The pressure drop is
substantial. Unlike most of the people offering opinions
I have gone as far as measuring it, and found it to be
nearly the same pressure-drop as a stock lid+silencer.
People pay good money to fix -that- loss.
I've been running a descreened 85mm Delphi for a very
long time now, and it's needed no real tuning; the stock
Z06 table works fine there. But I have a very straight
inlet tract. I would not claim to predict what somebody
else's lineup would see. Some lids were said to affect
descreened MAFs more than others, but that's all second
or thirdhand.
I'd recommend that if you can't tune it yourself, don't
go hacking on hardware.
of the little channels. The square-law (or higher order)
drag is what evens out the airflow. The pressure drop is
substantial. Unlike most of the people offering opinions
I have gone as far as measuring it, and found it to be
nearly the same pressure-drop as a stock lid+silencer.
People pay good money to fix -that- loss.
I've been running a descreened 85mm Delphi for a very
long time now, and it's needed no real tuning; the stock
Z06 table works fine there. But I have a very straight
inlet tract. I would not claim to predict what somebody
else's lineup would see. Some lids were said to affect
descreened MAFs more than others, but that's all second
or thirdhand.
I'd recommend that if you can't tune it yourself, don't
go hacking on hardware.
I was able to pop my screen out after some finess with the flat end of a 3/8 extension.
I can't say the screen helps much but I understand manifold pressure and airflow from my schooling as an aircraft mechanic. And somehow my 6 speed managed to run a 12.85 at 111 with street tires/ stock worn out clutch and the hated flowmaster mufflers, bbk headers, and an no ls6 intake. Too many people see one post on this forum and think its solid fact
Last edited by M1tch; 09-20-2012 at 01:50 PM.
09-20-2012, 05:48 PM
#22
LS1Tech Administrator
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Some of these people have seen different results:
http://www.hptuners.com/forum/showthread.php?t=26546
Different cars/applications = different results apparently. There was a good link within the above link that explained this further:
----------
"The best page I have found to read about "turbulence management" was this one from Peter Bradshaw:
http://navier.stanford.edu/bradshaw/...nelconfig.html
Might not all be useful, but click on the "screens" and "honeycomb" for pages about them."
http://www.hptuners.com/forum/showthread.php?t=26546
Different cars/applications = different results apparently. There was a good link within the above link that explained this further:
----------
"The best page I have found to read about "turbulence management" was this one from Peter Bradshaw:
http://navier.stanford.edu/bradshaw/...nelconfig.html
Might not all be useful, but click on the "screens" and "honeycomb" for pages about them."
Last edited by RPM WS6; 09-20-2012 at 06:29 PM.
