Anyone ever remove MAF screen? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

AJ · 05-31-2002, 02:50 PM

Their is a screen in the Mass air flow sensor.  I know that in many v8s etc that you can remove the screen, and mildly port the Maf sensor itself.  The screen is normally used to "straighten" the airflow, and give a correct reading, but it is also a hinderance in flow.  By removing it in muscle cars, you can lean out the A/F mixture artificially by having the PCM think it is getting less air than it actually is.  Can you do the same on a 240sx?  

Any other free mods to a stock 240sx?

hurleyboi514 · 05-31-2002, 03:04 PM

wait?  arent most muscle cars carb'd?  why would they even need an MAF?

uiuc240 · 05-31-2002, 03:54 PM

isn't that screen actually the wire that gets heated up in order to measure the flow?

Eric

Joe_M · 05-31-2002, 07:10 PM

We did this on my buddies 3000GT VR4 so I thought I would do it on mine.  I took the MAF off and there is no screening in it.  Not sure if it is the same for all S13's but mine didn't have any screening in it at all.

Joe

MarketPlayer · 05-31-2002, 07:53 PM

mine didn't either, except for the actual sensor coil!  I have never seen a screen in a MAF.  If you are sure that the screen isn't what judges the amount of air, and there is a coil somewhere behind the screen then go ahead.  Just make sure your engine managment is good or else!!!!!!

camppain · 05-31-2002, 09:50 PM

the maf screen is there for a reason. it helps keep debris out of the tb and from entering the intake manifold.

on quests the main problems is the screen which gets a build up of dirt over time and causes the car to idle like shit. i would leave it there the amount of air it holds back is very minimum.

05-31-2002, 02:50 PM	#1
AJ Zilvia Addict Join Date: Aug 2001 Location: Cincinnati Ohio Posts: 793 Trader Rating: (0) Feedback Score: 0 reviews	Their is a screen in the Mass air flow sensor.  I know that in many v8s etc that you can remove the screen, and mildly port the Maf sensor itself.  The screen is normally used to "straighten" the airflow, and give a correct reading, but it is also a hinderance in flow.  By removing it in muscle cars, you can lean out the A/F mixture artificially by having the PCM think it is getting less air than it actually is.  Can you do the same on a 240sx?   Any other free mods to a stock 240sx? __________________ __________ 96 s14 300zx lsd zeal b2's

05-31-2002, 03:04 PM	#2
hurleyboi514 Zilvia Addict Join Date: Mar 2002 Location: The Fort Posts: 905 Trader Rating: (0) Feedback Score: 0 reviews	wait?  arent most muscle cars carb'd?  why would they even need an MAF? __________________ HighTach Motorsports

05-31-2002, 03:54 PM	#3
uiuc240 Nissanaholic! Join Date: Apr 2002 Location: Naperville, IL Age: 46 Posts: 2,093 Trader Rating: (0) Feedback Score: 0 reviews	isn't that screen actually the wire that gets heated up in order to measure the flow? Eric __________________ 2002 Mazda Protege5 1989 S13 w/SR20DET (sold)

05-31-2002, 07:10 PM	#4
Joe_M Zilvia Member Join Date: Apr 2002 Location: Cincinnati, OH Age: 46 Posts: 210 Trader Rating: (0) Feedback Score: 0 reviews	We did this on my buddies 3000GT VR4 so I thought I would do it on mine.  I took the MAF off and there is no screening in it.  Not sure if it is the same for all S13's but mine didn't have any screening in it at all. Joe __________________ 1991 240SX LE Fastback SOLD!! 1992 USDM OneVia CA18DET powered SOLD!! 1996 240SX Base Model Rockin' the 4 Lug 1995 240SX Base Model $400 project car... and it runs!

05-31-2002, 09:50 PM	#6
camppain Will never get banned... Join Date: Sep 2001 Location: San Diego CA Age: 45 Posts: 1,510 Trader Rating: (0) Feedback Score: 0 reviews	the maf screen is there for a reason. it helps keep debris out of the tb and from entering the intake manifold. on quests the main problems is the screen which gets a build up of dirt over time and causes the car to idle like shit. i would leave it there the amount of air it holds back is very minimum. __________________ -=-99 Sentra SE 5 speed-=- -=-95 240 SE 5 speed-=-

05-31-2002, 07:53 PM	#5
MarketPlayer Zilvia Member Join Date: Mar 2002 Posts: 251 Trader Rating: (0) Feedback Score: 0 reviews	mine didn't either, except for the actual sensor coil!  I have never seen a screen in a MAF.  If you are sure that the screen isn't what judges the amount of air, and there is a coil somewhere behind the screen then go ahead.  Just make sure your engine managment is good or else!!!!!!