stock MAF sensor mods?

stanger00 · 11-22-2004, 01:47 PM

my roomate cut out a peice of his MAF and now his car has a rough idle and has a check engine light on? have any of you guys made this change on your stock MAF? if you did, did you have the same problem as he did? hes looking to buy a used one if you know of one for sale let me know

WaterDR · 11-22-2004, 02:02 PM

Crap! RULE #1: Never modify the MAF. He should not drive the car until the MAF is repaired or replaced. The device is extremely sensitive and controls exactly how the car adds fuel. ANY CHANGES made to a MAF require a tune on a dyno. The only acceptible mod to a MAF, is to remove the screen, but even doing this is borderline as it will make the car run lean...sometimes too lean.

What did he cut out? I can't imagine anybody taking anything out of the MAF (besides the screen). Did he by chance remove the sample tube? If he did, he is lucky that the motor is not ruined.

If you need more specifics, I would be happy to PM my phone number to you and you can give me a call.

stanger00 · 11-22-2004, 02:09 PM

no the tube is still there the part he cut out is a hollow peice of plastic that the sample tube sits inside, it looks like it directs air flow to the sample tube. how does it work less air more fuel or the opposite? yeah it would be bad considering he drives a BULLITT

WaterDR · 11-22-2004, 04:48 PM

Bingo! That is the problem. You can't that out. It is designed to create laminar flow to the MAF sensor at the correct velocity. W/o it, there is no way the car will run properly.

What the heck was your buddy thinking? He is somewhat lucky to still have a motor.

Blue02GT · 11-22-2004, 07:06 PM

The stock maf is good for close to 400 hp. No need to mess with it. He needs to get a new one from Ford.

IceMan · 11-25-2004, 05:15 AM

Tell him the next time he wants to mod something to come to the forums here and ask someone... Might have cut a few years off his engine heh....

spike_africa · 11-25-2004, 09:52 AM

like they said dont ever mess wiht your maf. nothing good comes of it.

Go ot www.fordpartsonline.com

they should have them for a pretty cheap price.
i got a L maf from them for my old truck for 100bucks.

11-22-2004, 02:02 PM	#2 (permalink)
WaterDR Administrator Join Date: Sep 2004 Posts: 6,374	Crap! RULE #1: Never modify the MAF. He should not drive the car until the MAF is repaired or replaced. The device is extremely sensitive and controls exactly how the car adds fuel. ANY CHANGES made to a MAF require a tune on a dyno. The only acceptible mod to a MAF, is to remove the screen, but even doing this is borderline as it will make the car run lean...sometimes too lean. What did he cut out? I can't imagine anybody taking anything out of the MAF (besides the screen). Did he by chance remove the sample tube? If he did, he is lucky that the motor is not ruined. If you need more specifics, I would be happy to PM my phone number to you and you can give me a call. __________________ Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email

11-22-2004, 04:48 PM	#4 (permalink)
WaterDR Administrator Join Date: Sep 2004 Posts: 6,374	Bingo! That is the problem. You can't that out. It is designed to create laminar flow to the MAF sensor at the correct velocity. W/o it, there is no way the car will run properly. What the heck was your buddy thinking? He is somewhat lucky to still have a motor. __________________ Black 2000 GT Vert: Novi-2000 with Intercooler (375rwhp @ 9 psi); Tune by Kauffmans; Roush 380R Body kit; Steeda Subframes; Steeda Strut Tower Support; Deep Dish Bullets; FRPP 4:10's; SCT 4 Position Chip with four custom tunes; Steeda CAI; C&L Pleum; BBK 75 TB; SLP Loudmouth; SLP Catted X-Pipe; Bullitt Suspension; UPR Conrol Arms; Focus Fuel Pump My Car My Email

11-22-2004, 07:06 PM	#5 (permalink)
Blue02GT Ex Mini Smack King Join Date: Nov 2004 Location: St. Louis Posts: 868	The stock maf is good for close to 400 hp. No need to mess with it. He needs to get a new one from Ford. __________________ True Blue 2002 GT Premium 4r70W 1/8 8.205@ 84.780 1/4 12.874@ 107.20 Bolt on's n/a NMRA #7703 Dyno'd at Modular Depot 251 hp. 291 Tq. 4.30's, 3500 Stall converter, Steeda upper & Lowers, Tokico drag struts, M & M frame connectors, P & A valve body, C&L plenum, Accufab 75mm TB, Jet Hot Long tubes, Hooker O/R X, Steeda catback,SCT tune,Steeda pullies.

11-25-2004, 05:15 AM	#6 (permalink)
IceMan Yellow C5 Z06 Join Date: Sep 2004 Location: Ocoee, FL Posts: 306	Tell him the next time he wants to mod something to come to the forums here and ask someone... Might have cut a few years off his engine heh.... __________________ C5 Yellow Corvette Z06 - 402rwhp 392rwt 2003 Red Fire SVT Cobra - Sold 2003 Torch Red Mach 1 - Sold 2003 Black Mach 1 - Sold

11-25-2004, 09:52 AM	#7 (permalink)
spike_africa Administrator Join Date: Sep 2004 Location: Orlando,Florida Posts: 7,376	like they said dont ever mess wiht your maf. nothing good comes of it. Go ot www.fordpartsonline.com they should have them for a pretty cheap price. i got a L maf from them for my old truck for 100bucks. __________________ Dustin 2002 GT Mustang 5-Speed Drag Radials,Sprayed,Powershifted WOOO HOOOO!

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