Results 1 to 9 of 9

Thread: Will 3.0L airbox cause complications for 2.5L engine?

  1. #1
    Join Date
    Sep 2007
    Location
    Houston, Tx
    Posts
    1,978
    My Cars
    '78 320i

    Will 3.0L airbox cause complications for 2.5L engine?

    Long story short, I purchased an airbox online to replace my broken mess of an airbox. I realized that the airbox is slightly larger so Im assuming its for the 3.0L M54b30. Fortunately, it came with the MAF and boot, so I plugged it in and Im receiving no CEL.

    It's a great, like-new airbox that I got for really cheap so I'd love to use it. Any issues with that?

  2. #2
    Join Date
    Oct 2010
    Location
    San Jose, CA
    Posts
    11,537
    My Cars
    1997 BMW 540i 6 speed
    Are you talking about the air filter enclosure? If so, enjoy it, if it fits.


    Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.

  3. #3
    Join Date
    Sep 2007
    Location
    Houston, Tx
    Posts
    1,978
    My Cars
    '78 320i
    Yes, maybe thats why I cant find any google results on it. Specifically, 13711716218. BMW calls it the 'Intake Muffler'

  4. #4
    Join Date
    Oct 2010
    Location
    San Jose, CA
    Posts
    11,537
    My Cars
    1997 BMW 540i 6 speed


    Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.

  5. #5
    Join Date
    Sep 2007
    Location
    Houston, Tx
    Posts
    1,978
    My Cars
    '78 320i
    Just in case anyone reads this...

    I diagnosed the vacuum leak I had, it was the CCV oil return hose. This was installed before the fix. I still had a rough idle, stumbling, and the lean CEL came on at quick starts. I ended up switching BACK to the 2,5L airbox and air flow sensor. It resolved the issue. I would not recommend installing a 3.0 airbox and air sensor on a 2.5L. It didnt fit super well either and you would need the front intake book as well.

  6. #6
    Join Date
    Oct 2010
    Location
    San Jose, CA
    Posts
    11,537
    My Cars
    1997 BMW 540i 6 speed
    Thanks for the feedback.


    Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.

  7. #7
    geargrinder's Avatar
    geargrinder is offline Having No Trouble Here BMW CCA Member
    Join Date
    Mar 2010
    Location
    AndoverRockport MA & Intl
    Posts
    14,856
    My Cars
    E46M3Cic E39.540iT E84X1
    Yeah I didn't see this before but could have told you the MAF tube was gonna be the problem, as that part IS different. If you could have used the same MAF tube, the box itself shouldn't have made a bit of difference. Using the wrong MAF means wrong air metering to the motor (motor probably was running lean?) and no good unless you fix the tune for it...
    2003 M3CicM6 TiAg
    2002 540iT Sport Vortech S/C 6MT LSD TiAg
    2008 Audi A3 2.0T DSG (the daily beater)
    2014 BMW X1 xDrive28i (wifemobile)

    Former:

    1985 MB Euro graymarket 300SL
    1995.5 Audi S6 Avant (utility/winter billetturbobattlewagen)


  8. #8
    Join Date
    Sep 2007
    Location
    Houston, Tx
    Posts
    1,978
    My Cars
    '78 320i
    Quote Originally Posted by geargrinder View Post
    Yeah I didn't see this before but could have told you the MAF tube was gonna be the problem, as that part IS different. If you could have used the same MAF tube, the box itself shouldn't have made a bit of difference. Using the wrong MAF means wrong air metering to the motor (motor probably was running lean?) and no good unless you fix the tune for it...
    I wanted to use my MAF but it would have required some plastic welding to make it fit. For those who really want to know, the piping from the aixbox is larger, the MAF is a wider diameter, and it leads to a different intake boot. The second intake boot that connects to the engine is the same, but since everything before that point is different, its moot.

    Frustrating that its the same part number but the parts ARE different. Just be sure to get the 2.5L M54 airbox and everything unless you are looking to retune.

  9. #9
    geargrinder's Avatar
    geargrinder is offline Having No Trouble Here BMW CCA Member
    Join Date
    Mar 2010
    Location
    AndoverRockport MA & Intl
    Posts
    14,856
    My Cars
    E46M3Cic E39.540iT E84X1
    I think you're confused about the parts and numbers there j-rod. Very much that's not "the same part number".

    Different parts get different numbers, always. Even if there's a supercession where a part is microscopically changed or improved, but is exact-drop-in-replacement, BMW virtually always issues a new PN.

    The 'baby' M54 engines yes seem to use the same parts as all the older M52's, airbox 13711716218, with associated smaller MAF tube etc. etc.

    The 'proper' M54 engines - as one would expect - use a distinctly different number airbox, 13711440058, with associated larger MAF tube etc. etc.

    https://www.realoem.com/bmw/enUS/par...058&series=E39

    You could have tried running the 3L tune however you'd have to swap the 3.0 squirtjectorz too, and obv it wouldn't have been optimalized.
    2003 M3CicM6 TiAg
    2002 540iT Sport Vortech S/C 6MT LSD TiAg
    2008 Audi A3 2.0T DSG (the daily beater)
    2014 BMW X1 xDrive28i (wifemobile)

    Former:

    1985 MB Euro graymarket 300SL
    1995.5 Audi S6 Avant (utility/winter billetturbobattlewagen)


Similar Threads

  1. Z3 E36/7 WTB Z3 3.0L Airbox
    By StarvinMarvin in forum BMW Parts Wanted
    Replies: 0
    Last Post: 02-21-2013, 08:54 PM
  2. WTB: 3.0l Euro Airbox and Snorkel
    By Das Bullitt in forum BMW Parts Wanted
    Replies: 0
    Last Post: 12-18-2012, 07:58 AM
  3. Wanted ::: Stock 2.0L Airbox
    By blitzed310 in forum 1975 - 1983 (E21)
    Replies: 10
    Last Post: 06-05-2010, 02:36 AM
  4. m54 3.0L cyl head and 89 325 ix engine
    By tcman70 in forum Engines, Performance Parts & Software
    Replies: 0
    Last Post: 04-14-2009, 04:50 PM
  5. Replies: 7
    Last Post: 10-25-2007, 01:24 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •