LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Cutting Out MAF Sensor Screens?

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Old Jul 2, 2003 | 08:37 AM
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TorchRedZ28's Avatar
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Cutting Out MAF Sensor Screens?

If there anything special to use when descreening your stock MAF sensor? And are there any tips or suggestions that I should know before I attempt this? Also what to watch out for besides cutting the sensor itself or breaking that. Thanks for any help you guys can give me.
Old Jul 2, 2003 | 08:43 AM
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Removing the screen is no big deal, it's just held in there by a retaining ring, you don't have to cut it. If you want to port the maf then you have to be carefull of the wire sensor. There was just another post on here about the flukey readings the MAF gives out when you start messing with it.

I was surprised at how happy Bryan of PCMforleSS was when i told him that i didn't descreen or port it. He programs a lot of cars and apperently stuff other than a stock MAF can become a huge pain int eh ****.

if you have a ram air descreening might be ok because it's a straight shot and you don't get the swirling from the turn of the elbow. Then again a lot of people have elbows and descreened MAFs and no trouble.

You judge if it's worth it for a questionable gain if any. There are a lot bigger motors running the same size MAF.
Old Jul 2, 2003 | 08:48 AM
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02 'Hawk's Avatar
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From: Wear dark glasses like the cops in Texas
If I've said it once...

I've said it 1K times. Don't **** with the MAF. Leave it alone.

I had the OEM screened MAF on my 396 LT1 for christ's sake.

just don't do it, too risky for negligible gain
Old Jul 2, 2003 | 08:54 AM
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anaik's Avatar
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Read these threads before you decide.

http://web.camaross.com/forums/searc...der=descending
Old Jul 2, 2003 | 08:57 AM
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I'm sure you can find the ported ends somewhere cheap--if you really want to do this mod, just buy the ported ends and hang on to your stock ones. I wouldn't even remove the screen from you stock one. It seems as though the stock housings are actually in high demand--matter of fact, I bet someone will offer you their ported MAF for you stock one with screen intact.
Old Jul 2, 2003 | 09:01 AM
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I'll trade you my ported MAF for you stock one.
Old Jul 2, 2003 | 10:56 AM
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What is the benifit of a ported one, how does it help and where is it ported?
Old Jul 2, 2003 | 11:03 AM
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Non of that lil induction BS is gonna give ya anything, save your money for a real mod like headers
Old Jul 2, 2003 | 11:04 AM
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If you scroll down towards the bottom of the page here you can see a before and after pic of my MAF. I don't feel there's much benefit to a ported one. I'd go back to the stock housing if I could find some cheap.
Old Jul 2, 2003 | 11:04 AM
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Originally posted by 94formulabz


I was surprised at how happy Bryan of PCMforleSS was when i told him that i didn't descreen or port it. He programs a lot of cars and apperently stuff other than a stock MAF can become a huge pain int eh ****.

I ported and descreen mine a few years ago and never had any problems with it. Then I added the hotcam kit and and had Bryan reprogram it and I've had a high rpms miss ever since. I just bought a set of stock ends and screen off someone here today to see if that fixes it. He never mentioned that the MAF may be a problem to me, I wish he would have. Looking back now I wouldn't have messed with it.
Old Jul 3, 2003 | 09:10 AM
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TorchRedZ28's Avatar
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Thanks guys for the help. I think after reading your thoughts I will just leave the maf alone. It is safer and you all are right, there aren't huge gains to be had doing this.
Old Jul 3, 2003 | 09:48 AM
  #12  
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i had a buddy that did that to his car and it didn't run right until he got a stock one. A waste of money and time for not a huge gain. But.. I have headers for the 94-95 lt1. Brand new edelbrock with y pipe in a box never even touched I ran out of time and I am leaving with the air force. I can't take them with me nor the car. If you want them we can work out a deal let me know. Drop me an email csuttonwg@military.com
Old Jul 3, 2003 | 09:54 AM
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I believe that the screen is more important than the porting of the MAF. The screen starightens the air as well as regulates (to a degree) how much enters the MAF. I have ported mine, BUT I left the screen in place. I have noticed no negative things from it, but then again, I haven't had tuning, nor any other big mods.
Old Jul 3, 2003 | 10:21 AM
  #14  
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I think there may be a small gain that can be had from porting and descreening it on a mostly stock motor with stock programming since it is supposed to lean out the A/F ratio some. I really never noticed any difference from it good or bad when my car had stock programming. WIth programming though it's apparently not a good idea, that's why I'm now going back to a stock one.
Old Jul 3, 2003 | 11:18 AM
  #15  
colorchange96's Avatar
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just get some pliers and rip the screen out. it WONT hurt anything. im about the biggest dumbass as far as working on cars on this entire message board, and i did it with no ill effects. you will notice some more top end pull with it. 3 of my friends have lt1s of different years and they have all done it with no problems as well. descreening gets about as bad a rap as the optispark. nobody i know has a had a problem with theirs.
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