Author Topic: Bosch MAF Screen Removal..bad idea?  (Read 2487 times)

0 Members and 1 Guest are viewing this topic.

English

  • Lightly Modded
  • **
  • Posts: 276
Bosch MAF Screen Removal..bad idea?
« on: September 01, 2006, 08:56:31 PM »
Hey, has anyone removed the metal screen infront of the MAF sensor on the 2.7T engine.....i have read a few posts that say this helps with throttle response.....any thoughts on this.....some posts say it's there just as a secondary filter......to remove or not to remove, that is the question?

Sorry, posted in wrong forum....meant to go into "General" section....any help on moving post?
02 Allroad 2.7T
03 Land Rover Discovery
01 BMW R1150GS

"It's like pie and chips.......for free"

03Indigo

  • Global Moderator
  • Supercar
  • *****
  • Posts: 5,686
Re: Bosch MAF Screen Removal..bad idea?
« Reply #1 on: September 01, 2006, 09:32:09 PM »
moved to general per your request :)

Rocky Mountain Club B5

Re: Bosch MAF Screen Removal..bad idea?
« Reply #1 on: September 01, 2006, 09:32:09 PM »

DenverPat

  • Heavily Modded
  • ****
  • Posts: 1,560
    • http://www.stonefieldinvestments.com
Re: Bosch MAF Screen Removal..bad idea?
« Reply #2 on: September 01, 2006, 09:36:55 PM »
Rusty did this.  He says it's called the "snow screen."  I've heard of a couple others doing this, also.  Probably just fine to do for a few extra HP.  That said, I'm overly cautious about this stuff, so I'll probably just leave mine in.
"Of all the extreme sports I've ever participated in- windsurfing, kite boarding, wake boarding, tow-in surfing and snowboarding- skiing, for me, made everything else easy."
-Chuck Patterson

Denvernoob

  • Lightly Modded
  • **
  • Posts: 169
Re: Bosch MAF Screen Removal..bad idea?
« Reply #3 on: September 02, 2006, 12:56:43 AM »
i dont know how the screen is on the 2.7, but on the 1.8t its a wide plastic mesh, and its purpose is as a flow straightener for air prior to the MAF, thus, in theory providing a more accurate read.  given what it is on the 1.8, i would not personally remove it...but i cant speak about the 2.7t
004.5 QMT6 Ultrasport Loaded
GIAC FX K04 w/ Injectors, K04-15
and about a million other big and little mods!

English

  • Lightly Modded
  • **
  • Posts: 276
Re: Bosch MAF Screen Removal..bad idea?
« Reply #4 on: September 02, 2006, 01:25:17 AM »
I read that the 2.7 also has the plastic screen or flow straightener, this is one side of the MAF sensor and the metal screen is the other side......i will probably leave it alone but it's always nice to hear other peoples opinion.......my 2 cents is worth about 1.....
02 Allroad 2.7T
03 Land Rover Discovery
01 BMW R1150GS

"It's like pie and chips.......for free"

Denvernoob

  • Lightly Modded
  • **
  • Posts: 169
Re: Bosch MAF Screen Removal..bad idea?
« Reply #5 on: September 02, 2006, 01:36:33 AM »
if the wide screen is on the intake side, and the mesh wire screen is on the engine side of the MAF, i cant see a reason why not to remove it.  it prob. couldnt hurt.
004.5 QMT6 Ultrasport Loaded
GIAC FX K04 w/ Injectors, K04-15
and about a million other big and little mods!

English

  • Lightly Modded
  • **
  • Posts: 276
Re: Bosch MAF Screen Removal..bad idea?
« Reply #6 on: September 02, 2006, 01:40:45 AM »
Thats my understanding of the layout......should get off the couch and open the hood really.....
02 Allroad 2.7T
03 Land Rover Discovery
01 BMW R1150GS

"It's like pie and chips.......for free"

Rusty

  • Lightly Modded
  • **
  • Posts: 354
Re: Bosch MAF Screen Removal..bad idea?
« Reply #7 on: September 18, 2006, 08:20:30 PM »
The "snow screen" is part of the airbox and can be removed w/o reservation.

There have been many Internet forum discussions of the other screens.  It seems to be a consensus that the wire-mesh screens can also be removed w/o reservation, pre or post-MAFS it doesn't matter.

The only debate seems to be the plastic "screens" - the ones that are commonly called a "flow straightener", pre-MAFS  It doesn't really straighten the flow, it insures that the flow is equal across the intake tube, increasing the accuracy of the MAF sensor measurement.  It does this quite well - but it also restricts flow.  You can take it out and the car will generally run better.  If it doesn't, then put it back in.
i]AEB Engines have better-flowing heads and a real throttle cable...[/i]

English

  • Lightly Modded
  • **
  • Posts: 276
Re: Bosch MAF Screen Removal..bad idea?
« Reply #8 on: September 18, 2006, 09:17:28 PM »
Thanks for the knowledge.......that project on the back burner right now though.....
02 Allroad 2.7T
03 Land Rover Discovery
01 BMW R1150GS

"It's like pie and chips.......for free"