E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 08-07-2008, 02:30 PM   #1
Rayce185
Modifiziertes ///Mitglied
 
Rayce185's Avatar
 
Join Date: Nov 2005
Location: Switzerland
Posts: 27,078
MAF Tuning?!

I read somewhere that removing the plastic fence in the MAF unit may bring benefits when installing an aftermarket air filter, since it optimizes air flow.

Troof?
__________________
|
|
|
|

dun dun duuuunnnn
Rayce185 is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 08-07-2008, 02:39 PM   #2
NightRunner
Registered User
 
Join Date: Nov 2007
Location: NoVA
Posts: 302
My Ride: Slowmobile
dont do it. you wont gain anything but ruining your sensor. its there to straighten the air flow over the sensor. taking it out only leads to bad.

Myth busted! its there for a reason other than eye-candy
__________________
NightRunner is offline   Reply With Quote
Old 08-07-2008, 02:59 PM   #3
Rayce185
Modifiziertes ///Mitglied
 
Rayce185's Avatar
 
Join Date: Nov 2005
Location: Switzerland
Posts: 27,078
Yeah, that's why I was wondering what FUBAR I read. I can't even remember where that was

Thanks!
__________________
|
|
|
|

dun dun duuuunnnn
Rayce185 is offline   Reply With Quote
Old 10-07-2008, 01:26 PM   #4
TheRiddle
Sofa-king-what
 
Join Date: Oct 2002
Location: IT-UK-US
Posts: 1,152
My Ride: 2.8-M52TU'ed Vert
i remember that thread...

someone agreed someone not..

i removed the screens but honestly i think that it ws a placebo effect...

anyway take a read here...

http://forum.e46fanatics.com/showthr...threadid=38959
__________________
TheRiddle is offline   Reply With Quote
Old 10-07-2008, 03:54 PM   #5
n2Bimmer
Registered User
 
Join Date: May 2007
Location: calii
Posts: 9,670
My Ride: Loves Corners
ive heard this too. but i dought it.
n2Bimmer is offline   Reply With Quote
Old 10-07-2008, 05:55 PM   #6
simsima325
'a certain moderator'
 
simsima325's Avatar
 
Join Date: Feb 2001
Location: Hyattsville, MD
Posts: 37,805
My Ride: Honda Civic
A better trick would be figuring out how to run a larger 330 MAF on a 325. Good half inch diameter difference. Same with inlet tube.
__________________
-Brendan
simsima325 is offline   Reply With Quote
Old 10-11-2008, 01:40 AM   #7
mkodama
Registered User
 
mkodama's Avatar
 
Join Date: Oct 2006
Posts: 33,171
Yeah, doesn't provide much benefit and read it causes damage or incorrect readings to for the sensor. Also air resistance things like that only have a small benefit at higher RPMs and when you are at full throttle. No difference in the first half of your RPM range.

Quote:
Originally Posted by simsima325 View Post
A better trick would be figuring out how to run a larger 330 MAF on a 325. Good half inch diameter difference. Same with inlet tube.
One step better would be the entire 330 intake and manifold. Most of the power increase of a 330 over 325 is solely from the intake and manifold.

If I remember correctly, the longer stroke 330 cranks provides 30% or the power increase and the 330 intake and manifold provide like 50%, and the rest is a few smaller things.
__________________


Last edited by mkodama; 10-11-2008 at 01:45 AM.
mkodama is offline   Reply With Quote
Old 10-11-2008, 03:10 AM   #8
Bimmer Dude Xi
Registered User
 
Join Date: Jul 2008
Location: Staten Island, NY
Posts: 2,353
My Ride: 03 325XI 07 ZX-6R
Send a message via AIM to Bimmer Dude Xi
Quote:
Originally Posted by mkodama View Post
Yeah, doesn't provide much benefit and read it causes damage or incorrect readings to for the sensor. Also air resistance things like that only have a small benefit at higher RPMs and when you are at full throttle. No difference in the first half of your RPM range.



One step better would be the entire 330 intake and manifold. Most of the power increase of a 330 over 325 is solely from the intake and manifold.

If I remember correctly, the longer stroke 330 cranks provides 30% or the power increase and the 330 intake and manifold provide like 50%, and the rest is a few smaller things.
So basically the 330 intake manifold has larger runners?
Will the 330 maf sensor connect into a 325?
Are throttle bodies the same? Or is the 330 have a larger bore?
What is exactly needed?
__________________

|Dinan High Flow Air Box|Eibach Pro Kit|Koni Sport|UUC Strut Barbarian|UUC TSE3|UUC Underdrive Pulleys|18" VMR V710|

|BMC Race Air Filter|CRG Spectrum Levers| Galfer Steel Braided Brake Lines|Volar Motorsport Spiked Frame & Bar-end Sliders|
Bimmer Dude Xi is offline   Reply With Quote
Old 10-23-2008, 03:38 AM   #9
mkodama
Registered User
 
mkodama's Avatar
 
Join Date: Oct 2006
Posts: 33,171
Quote:
Originally Posted by Bimmer Dude Xi View Post
So basically the 330 intake manifold has larger runners?
Will the 330 maf sensor connect into a 325?
Are throttle bodies the same? Or is the 330 have a larger bore?
What is exactly needed?
I'm not sure whether it is the design, length, diameters or what with the inatke runners. But I am pretty sure that the 330 has a larger diameter intake tube, MAF sensor, and throttle body. Also likely proper software is needed to make sure everything runs smoothly.
__________________

mkodama is offline   Reply With Quote
Old 10-23-2008, 06:51 AM   #10
Rayce185
Modifiziertes ///Mitglied
 
Rayce185's Avatar
 
Join Date: Nov 2005
Location: Switzerland
Posts: 27,078
330 intake system retrofit DIY FTW
__________________
|
|
|
|

dun dun duuuunnnn
Rayce185 is offline   Reply With Quote
Old 12-22-2008, 11:43 AM   #11
n2Bimmer
Registered User
 
Join Date: May 2007
Location: calii
Posts: 9,670
My Ride: Loves Corners
So anyone do this, can you just sway the MAF sensor or what.
n2Bimmer is offline   Reply With Quote
Old 12-22-2008, 03:56 PM   #12
aggieE46
Keep it clean
 
aggieE46's Avatar
 
Join Date: Aug 2006
Location: Royse City
Posts: 8,046
My Ride: 03 Evo, 07 Passat
Send a message via AIM to aggieE46
It's been done. Recently. Search around. I think wooboodoo did it.

Quote:
Originally Posted by Racing.Ray View Post
330 intake system retrofit DIY FTW
__________________
aggieE46 is offline   Reply With Quote
Old 12-22-2008, 04:00 PM   #13
Rayce185
Modifiziertes ///Mitglied
 
Rayce185's Avatar
 
Join Date: Nov 2005
Location: Switzerland
Posts: 27,078
I need a DIY for a complete 330 intake system (including manifold) onto a 323...
__________________
|
|
|
|

dun dun duuuunnnn
Rayce185 is offline   Reply With Quote
Old 12-22-2008, 06:57 PM   #14
n2Bimmer
Registered User
 
Join Date: May 2007
Location: calii
Posts: 9,670
My Ride: Loves Corners
i heard the gains are only on the low end and you losse high end power
n2Bimmer is offline   Reply With Quote
Old 12-28-2008, 03:10 AM   #15
GaffasCompact
Registered User
 
Join Date: Dec 2008
Location: west mids
Posts: 5
My Ride: e46 320td compact
Quote:
Originally Posted by Racing.Ray View Post
I read somewhere that removing the plastic fence in the MAF unit may bring benefits when installing an aftermarket air filter, since it optimizes air flow.

Troof?
well i own a e46 compact 320d, i have unpluged the maf and the car is running fine , its actually running better .only down sideto it is that the engine managment light appears on the dash.
GaffasCompact is offline   Reply With Quote
Old 12-28-2008, 03:17 AM   #16
paraklas
OEM ///Member
 
paraklas's Avatar
 
Join Date: Jan 2006
Location: Cyprus
Posts: 5,939
My Ride: ESS TS2 320ci
Quote:
Originally Posted by GaffasCompact View Post
well i own a e46 compact 320d, i have unpluged the maf and the car is running fine , its actually running better .only down sideto it is that the engine managment light appears on the dash.
And your fuel consumption will increase too
__________________
http://www.argyrides.eu/makeyourownsig.jpg
paraklas is offline   Reply With Quote
Old 01-02-2009, 07:34 PM   #17
muly
Registered User
 
Join Date: Apr 2007
Location: UK
Posts: 103
My Ride: 330 sport vert
Quote:
Originally Posted by GaffasCompact View Post
well i own a e46 compact 320d, i have unpluged the maf and the car is running fine , its actually running better .only down sideto it is that the engine managment light appears on the dash.
If the the car is running better with the maf disconnected, the car will be running in limp mode( pre set base map) and the maf is very likely broken hence why it runs better unplugged
muly is offline   Reply With Quote
Old 01-03-2009, 11:51 PM   #18
sirch
Registered User
 
Join Date: Dec 2008
Location: Colorado
Posts: 66
My Ride: 330i, 545i
Quote:
Originally Posted by NightRunner View Post
dont do it. you wont gain anything but ruining your sensor. its there to straighten the air flow over the sensor. taking it out only leads to bad.

Myth busted! its there for a reason other than eye-candy
Most MAF are heat sensitive, the more the air flow the more they cool. If you remove the honeycomb to increase flow you will just increase the rate in which the wires in the MAF are cooled, thus reducing performance. In the past I have taken out my MAF and sanded it larger to make reduce the flow the MAF sees while increasing the air flow. The result was an increase in timing and a increase on the dyno, but I it is not as easy as it sounds and other areas need special attention to correctly tune the engine. In all, remove the honeycomb and you could lose performance.
sirch is offline   Reply With Quote
Old 01-04-2009, 08:35 AM   #19
GaffasCompact
Registered User
 
Join Date: Dec 2008
Location: west mids
Posts: 5
My Ride: e46 320td compact
it seems to have more power and run better frm stand still. normally from standstill it would b a bit lumpy

Last edited by GaffasCompact; 01-04-2009 at 08:55 AM.
GaffasCompact is offline   Reply With Quote
Old 01-04-2009, 11:51 AM   #20
330i ZHP
Registered User
 
330i ZHP's Avatar
 
Join Date: Mar 2005
Location: Washington, DC
Posts: 21,800
My Ride: have 5 doors and FI
Send a message via AIM to 330i ZHP Send a message via Yahoo to 330i ZHP
this thread has a lot of interesting (and some bad) information going around
__________________
/_________\
OO=[][]=OO
330i ZHP is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Censor is OFF





All times are GMT -5. The time now is 06:44 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use