MAF screens???
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Joined: Apr 2000
Posts: 1,208
From: Tulsa
MAF screens???
Guys I was talking to a friend of mine yesterday and he asked if I had pulled the screens on my MAF, I had done it to my IROC but didn't know they had screens on the 4th gen MAF's is there any reason to leave it on or should I pull them off??
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Joined: Mar 2003
Posts: 594
From: Fort Smith, AR
2319 Posts and you haven't come across a thread on this yet?
Pull the screen off (carefully) and if you don't like the results put it back on. Before someone beats me on this one...do a search.
(Matter of fact, this same topic came up yesterday.)
Pull the screen off (carefully) and if you don't like the results put it back on. Before someone beats me on this one...do a search.(Matter of fact, this same topic came up yesterday.)
Last edited by Bastardcat; Apr 30, 2003 at 11:18 AM.
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From: Hell was full so they sent me to NJ
Unlike the 3rd Gen MAF, the 4th Gen unit only has one screen, on the inlet side. It really isn't much of an obstruction, and does contribute to maintaining the calibration of the meter. Some people remove the screen and find a rough idle or lost fuel mileage. Others find a truely miraculous SOTP gain, and "faster throttle response" (whatever that is ). On a lot of the early sensors, you just need to pull the spring ring out of the groove and the screen can be taken out without damage, and reinstalled if you don't like the results. I think some of the newer models can not be removed without destroying the screen.
The 4th Gen uses a real "GM" MAF, and it is not a flow restriction like the Bosch unit used in the 3rd Gens. They would respond very well to removing the TWO screens and cutting out the cooling fins.. but the 4th Gens don't offer as much opportunity.
). On a lot of the early sensors, you just need to pull the spring ring out of the groove and the screen can be taken out without damage, and reinstalled if you don't like the results. I think some of the newer models can not be removed without destroying the screen.The 4th Gen uses a real "GM" MAF, and it is not a flow restriction like the Bosch unit used in the 3rd Gens. They would respond very well to removing the TWO screens and cutting out the cooling fins.. but the 4th Gens don't offer as much opportunity.
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Registered User
Joined: Apr 2000
Posts: 1,208
From: Tulsa
Originally posted by Injuneer
Unlike the 3rd Gen MAF, the 4th Gen unit only has one screen, on the inlet side. It really isn't much of an obstruction, and does contribute to maintaining the calibration of the meter. Some people remove the screen and find a rough idle or lost fuel mileage. Others find a truely miraculous SOTP gain, and "faster throttle response" (whatever that is ). On a lot of the early sensors, you just need to pull the spring ring out of the groove and the screen can be taken out without damage, and reinstalled if you don't like the results. I think some of the newer models can not be removed without destroying the screen.
The 4th Gen uses a real "GM" MAF, and it is not a flow restriction like the Bosch unit used in the 3rd Gens. They would respond very well to removing the TWO screens and cutting out the cooling fins.. but the 4th Gens don't offer as much opportunity.
Unlike the 3rd Gen MAF, the 4th Gen unit only has one screen, on the inlet side. It really isn't much of an obstruction, and does contribute to maintaining the calibration of the meter. Some people remove the screen and find a rough idle or lost fuel mileage. Others find a truely miraculous SOTP gain, and "faster throttle response" (whatever that is
). On a lot of the early sensors, you just need to pull the spring ring out of the groove and the screen can be taken out without damage, and reinstalled if you don't like the results. I think some of the newer models can not be removed without destroying the screen.The 4th Gen uses a real "GM" MAF, and it is not a flow restriction like the Bosch unit used in the 3rd Gens. They would respond very well to removing the TWO screens and cutting out the cooling fins.. but the 4th Gens don't offer as much opportunity.
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Joined: Nov 1998
Posts: 71,110
From: Hell was full so they sent me to NJ
As I recall, the screens in the Bosch MAF's were actually "screens" made out of fairly heavy metal wire. The screen in the GM MAF is made out of a layered foil and paper, and pulled into a sheet with hex-shaped openings.... very little lost cross-sectional area.
Thread Starter
Registered User
Joined: Apr 2000
Posts: 1,208
From: Tulsa
Originally posted by Injuneer
As I recall, the screens in the Bosch MAF's were actually "screens" made out of fairly heavy metal wire. The screen in the GM MAF is made out of a layered foil and paper, and pulled into a sheet with hex-shaped openings.... very little lost cross-sectional area.
As I recall, the screens in the Bosch MAF's were actually "screens" made out of fairly heavy metal wire. The screen in the GM MAF is made out of a layered foil and paper, and pulled into a sheet with hex-shaped openings.... very little lost cross-sectional area.
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