LT1-LT4 Modifications 1993-97 Gen II Small Block V8
View Poll Results: MAF screen in or out
NO screen
55.81%
Yes i have the screen
41.86%
What is the MAF screen
0
0%
I don't care
2.33%
Voters: 129. You may not vote on this poll

MAF Screen IN OR OUT

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Old 01-20-2007, 08:13 PM
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Default MAF Screen IN OR OUT

I want to know how many people are running without the MAF screen
Old 01-20-2007, 08:17 PM
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OUT and it is PORTED. aslo it is a ls1 maf. I have had it in there for about 10 months, and no problems.
Old 01-20-2007, 09:10 PM
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mine's out and no problems
Old 01-20-2007, 09:22 PM
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Some people on camaroz28.com were giving me a hard time for taking the screen out of my MAF.
Thanks for all your time.
Old 01-20-2007, 09:26 PM
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The MAF was designed to work with the screen. The flow of air needs to be stabilized to get an accurate reading. This will yield better tuning among other things. No hp is to be gained by taking the screen off.
Old 01-20-2007, 09:29 PM
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Mine is in. And I have NO intention of removing it..too many people have had problems....who know's though...???
Old 01-20-2007, 09:50 PM
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No screen and no problems.
Old 01-20-2007, 10:08 PM
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I'm sure this topic has been beaten to death a few times. No, I haven't searched... but, I would value opinions from the big tuners on this issue vs. the average joe saying its a good idea. I descreened mine back before I knew any better and have no apparent problems... but, I would prefer having it now just for piece of mind.
Old 01-20-2007, 10:11 PM
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Originally Posted by seawolf06
The MAF was designed to work with the screen. The flow of air needs to be stabilized to get an accurate reading. This will yield better tuning among other things. No hp is to be gained by taking the screen off.
Agree. Why take it out? There's nothing gained by removing it, and possible issues if you do.
Old 01-20-2007, 10:55 PM
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I say leave it in. The only two ways I can see it improving power is 1) SLIGHTLY decreasing air flow resistance, or 2) fooling the PCM into a lean condition by making the sensor not read accurately, which could be dangerous for the motor. Personally, I don't think it's worth the risk.
Old 01-21-2007, 12:13 AM
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I wouldnt mind keeping the screen if I could, but I've got these billet MAF ends sitting on my bookcase that might go in this year
Old 01-21-2007, 01:05 AM
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Unmolested MAF here. MAF ends? Wow, I didn't realize those were still in production. I bought a set of Whisper MAF ends back in '99 because the plastic ends would 'help cool the intake charge' and also knocked out the screen because it was a 'restriction'. Once I bought my first tuning package, I ditched all the MAF trickery, including the MAF translator and the 'IAT timing tricker'.
Old 01-21-2007, 02:04 AM
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Originally Posted by JimMueller
Unmolested MAF here. MAF ends? Wow, I didn't realize those were still in production. I bought a set of Whisper MAF ends back in '99 because the plastic ends would 'help cool the intake charge' and also knocked out the screen because it was a 'restriction'. Once I bought my first tuning package, I ditched all the MAF trickery, including the MAF translator and the 'IAT timing tricker'.
these arent the MAF ends you're thinking of. A company commonly known as NX makes them for a reason
Old 01-21-2007, 02:40 AM
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Originally Posted by buffman
these arent the MAF ends you're thinking of. A company commonly known as NX makes them for a reason
Kick ***
Old 01-21-2007, 09:11 AM
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I don't know if the screen really does anything, I have taken it out in both my cars and my truck, I haven't noticed anything different really and no problems to mention. Probably does help to increase airflow but at the same time if you haven't cleaned your air filter in a while that will probably restrict it more than a screen could.
Old 01-21-2007, 09:36 AM
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Mine has been out for about 5 to 6 years. I have a 94 Z28 no problems yet. I spray the wires with contact cleaner about once a year because of the K&N. Just incase I over oil the filter.
Old 01-21-2007, 12:21 PM
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While my tuner was (dyno)tuning, I told him it was descreened. He said thats why and had to make some changes to the tune. Nothing but good results!
Old 01-21-2007, 05:54 PM
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Uhh mine is in and it's staying in because I see no reason to take it out and cause problems.
Old 01-22-2007, 08:37 AM
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I think some people need to understand how the MAF functions, only after that can you understand why and what it is OK to do too the MAF and how things can be corrected for in the pcm.

Screen thing also comes down too intake tract, have a curve right in front of the MAF and the screen can be benificial, if straight leading up too it then it may make no difference.

Porting a MAF destroys calibration, the calibration can only be restored by fairly signifigant work in the pcm.
Old 01-22-2007, 09:54 AM
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Mine has been out for awhile now. I descreened mine back in the day no problems here but didn't see any gain either.


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