Home Forums Articles How To's FAQ Register
Go Back   Xoutpost.com > BMW SAV Forums > X5 (E53) Forum
Arnott
User Name
Password
Member List Premier Membership Search Today's Posts Mark Forums Read

Xoutpost server transfer and maintenance is occurring....
Xoutpost is currently undergoing a planned server migration.... stay tuned for new developments.... sincerely, the management


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-23-2019, 07:49 AM
nickid's Avatar
Member
 
Join Date: Dec 2014
Location: uk
Posts: 51
nickid is on a distinguished road
Cold air intake for 3.0d

I've been working on some intake and filter ideas for my 02 3.0d.
I was wondering if some could help on an idea of changing the Oval maf housing for a round one?
I've replaced maf housings before for bigger ones on VWs but I am unsure how the e53 will read a round housing?
Does anyone have any info on this?
Reply With Quote

Sponsored Links

  #2  
Old 05-23-2019, 04:47 PM
wpoll's Avatar
Member
 
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 2,702
wpoll will become famous soon enough
Good luck with finding any info on flow rates and MAF response etc.

While the factory intake seems complex (because it is...) it includes a number of systems that you'll need to take into account of if you are looking to modify anything up that end.

The first (largest?) hurdle is that the oval MAF housing mount is part of the valve cover..!



You can see the MAF position at the lower right in the image above. To make any change here, you are going to need to hack up your valve cover.

Parts of the crank case breather and oil recovery systems (CCV) are built into the air filter frame on the valve cover too. There's a system of pipes that run from the breather assembly to the turbo compressor intake, under the air filter housing, so if you modify and/or remove the factory air intake and filtration arrangement, you'll need to develop a replacement for that system too.

I'm no expert on turbo diesel engines but given that the factory system is designed to deliver sufficient air to meet the demands of the turbo at full boost (about 2 bar I think) I'm guessing that "opening up" the intake so it can breather better won't make any real-work difference to performance. As the boost system controls (limits) the power level based on a number of factors such as throttle demand, engine rpm, engine temp, load, etc. I'm not sure that making more air available will make any difference.

Not wanting to pour cold water on your plans, just making sure you are aware of how deep this dive might get!!
__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
Reply With Quote
  #3  
Old 05-23-2019, 05:00 PM
wpoll's Avatar
Member
 
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 2,702
wpoll will become famous soon enough
Just been reading up a bit more on this and it seems if you are chasing more power from your diesel, there's an order to doing mods: -

1. ECU tuning - start here. Lots of "ECU chipping" solutions about.
2. Intercooler - increase size (flow rate and cooling efficiency).
3. Air intake - increase air intake capacity, to take advantage of greater ECU tune range and intercooler capacity.

So it would seem that increasing the air intake capacity isn't really going to help, at least as a first step, without the other mods in place first.

Of course, I'm assuming you goal is an increase in engine efficiency or power but maybe you are just after more intake noise!

As an aside, our engines already have a "CAI" of sorts. The intake air is ducted directly from behind the BMW "kidneys" so there's little engine bay heat reaching the intake.
__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
Reply With Quote
  #4  
Old 05-23-2019, 05:05 PM
nickid's Avatar
Member
 
Join Date: Dec 2014
Location: uk
Posts: 51
nickid is on a distinguished road
Don't need to hack anything, it will have a custom induction pipe from the turbo and will be including a oil catch can.
There are a few ideas I have with something as simple as cutting the pipe coming up to the maf in half, turning the to half to the 9 o'clock position attaching it back to the bottom up pipe, so it gives you room for a cone filter or carbon bmc cold air feed.
Oh and noise is not what I want, I just want a better filter set up. I have been checking the heat of the original filter in this nice weather we are having, and even with the cold air feed its far too warm sitting above the turbo and manifold.
Reply With Quote
  #5  
Old 05-23-2019, 05:21 PM
nickid's Avatar
Member
 
Join Date: Dec 2014
Location: uk
Posts: 51
nickid is on a distinguished road
3.0d are great for bhp gains, but just to get betting air in and getting it back out the other end makes and turbo car run better
I am renewing everything I can from pipes & hoses to rewiring and replacing the old earth cables with new one both diffs, transfer case and auto transmission fluids done today, with engine oil change tomorrow.
Reply With Quote
  #6  
Old 05-23-2019, 05:29 PM
wpoll's Avatar
Member
 
Join Date: Sep 2015
Location: South Island, New Zealand
Posts: 2,702
wpoll will become famous soon enough
Quote:
Originally Posted by nickid View Post
3.0d are great for bhp gains, but just to get betting air in and getting it back out the other end makes and turbo car run better
I am renewing everything I can from pipes & hoses to rewiring and replacing the old earth cables with new one both diffs, transfer case and auto transmission fluids done today, with engine oil change tomorrow.
It's going to feel like a new car! :-)

I replaced a bunch of vacuum lines when I did my manifold replacement a while back. Checked over everything else - it all seems in pretty good nick for a car with over 200,000kms.

Recently had to remove my (failed and noisy) mechanical fan - boy, does that ever make the engine feel frisky! Contemplating an all-electric replacement, as the removal of all the weight from the water pump is very attractive.
__________________
Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
Reply With Quote
  #7  
Old 05-23-2019, 11:33 PM
Member
 
Join Date: May 2014
Location: Australia
Posts: 63
wogboy_9000 is on a distinguished road
Has anyone here successfully downloaded their own ecu map, had it tuned (or tuned it themselves) and reloaded it via lapotop/OBD2?

I'd be interested in going down this route, as there are no tuners in my area and don't really want to be purchasing a hand held device like BSR PPC or Superchips Bluefin.

I've done a fair bit of research, but I can't find any information on anyone who's done it before.
Reply With Quote
  #8  
Old 05-24-2019, 12:05 PM
nickid's Avatar
Member
 
Join Date: Dec 2014
Location: uk
Posts: 51
nickid is on a distinguished road
Quote:
Originally Posted by wpoll View Post
It's going to feel like a new car! :-)

I replaced a bunch of vacuum lines when I did my manifold replacement a while back. Checked over everything else - it all seems in pretty good nick for a car with over 200,000kms.

Recently had to remove my (failed and noisy) mechanical fan - boy, does that ever make the engine feel frisky! Contemplating an all-electric replacement, as the removal of all the weight from the water pump is very attractive.
I am doing the same thing with the fan. I did replace my fan with an electric one on my 3.0i and I get what you mean by it feels frisky, mine felt smooth not as noisy.
Reply With Quote
  #9  
Old 05-25-2019, 04:33 AM
Member
 
Join Date: Jun 2017
Location: New zealand
Posts: 76
Ohsoslow is on a distinguished road
If you’re going to go with a custom tune, then just ditch the maf entirely, then you’ll hAve the freedom to make an intake however you like. Otherwise, get creative (brave) and just pull the actual maf sensor itself out of the oval housing, and mount it in a round pipe where ever works?
__________________
2004 X5 3.0d

New Zealand
Reply With Quote
  #10  
Old 05-26-2019, 08:16 AM
nickid's Avatar
Member
 
Join Date: Dec 2014
Location: uk
Posts: 51
nickid is on a distinguished road
I've a spare maf to mess about with.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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
Trackbacks are On
Pingbacks are On
Refbacks are On





All times are GMT -4. The time now is 07:44 PM.
vBulletin, Copyright 2019, Jelsoft Enterprises Ltd. SEO by vBSEO 3.6.0
2017 Xoutpost.com. All rights reserved. Xoutpost.com is a private enthusiast site not associated with BMW AG.
The BMW name, marks, M stripe logo, and Roundel logo as well as X3, X5 and X6 designations used in the pages of this Web Site are the property of BMW AG.
This web site is not sponsored or affiliated in any way with BMW AG or any of its subsidiaries.