1996 E36 328i itbs and remap - Page 2

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  1.  
    #11
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    kiwi328's Car Details
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    e36 328
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    96
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    Euro m3 head will not bolt up to an m50/2
    an American s50/2 head will(m50 non vanos,m50tu and m52 single vanos heads are all interchangeable)
    The oil filter problem can be solved by cutting and welding it shorter and using a different filter. Can't remember what filter off my head
    Or you can use a euro m3 oil filter. Only thing that needs adapting is an oil line for the vanos. Plus you get the benefit of an oil cooler.
    If your going to all this effort you might as well fab up some standoff injectors while you are at it.
    Tuning will be the most expensive part of itb's and as said all ready a lot of work for not a lot of gain.
    In saying that i'd love to buy some and try my darndest to fit them. How much do they usually go for in the uk?
     
     

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    #12
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    mistreku's Car Details
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    the filter is usually the M44 that they're using when shortening the case. ibt's go for roughly £300 on fleabay.
    There are only two products required to make the universe work properly: Duct tape and WD40. 


    If it moves (and it shouldn't): duct tape. 
If it doesn’t move (and it should): WD40.

    Everything else is just stuff.
     
     

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  5.  
    #13
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    touringRob's Car Details
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    Alpina what is the m50 runner to m52 port match like?

    Rob,
     
     

  6.  
    #14
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    Quote Originally Posted by touringRob View Post
    Alpina what is the m50 runner to m52 port match like?

    Rob,
    They are badly matched. That's why I needed to make the transition from the m3 port to the M52 port. This was done with 3d machining on a 5 axis machine. You can see the two different shapes in the photo.

    I had a friend with Dbilas itbs on a 328 who dynoed it. Bear in mind these are pukka custom made bodies for the M52. It gained 22bhp. Exactly the same gain as the manifold/bbtb. The bodies won't come into their own until you fit some hairy cams. Then the problem shifts to the hydraulic valves which don't like high revs.
     
     

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    #15
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    No sorry mate, i mean the m50 intake manifold to the standard m52 328i head. Not any of the m3 stuff, my fault its off topic. Im porting an escort head at the moment and the manifold to head match is terrible.

    But jesus, only 22bhp from throttle bodies! and a loss of torque too i would guess, definitely need 7000rpm and some nasty cams with tb's.

    Rob,
     
     

  8.  
    #16
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    Quote Originally Posted by touringRob View Post
    No sorry mate, i mean the m50 intake manifold to the standard m52 328i head. Not any of the m3 stuff, my fault its off topic. Im porting an escort head at the moment and the manifold to head match is terrible.

    But jesus, only 22bhp from throttle bodies! and a loss of torque too i would guess, definitely need 7000rpm and some nasty cams with tb's.

    Rob,
    Ahh, sorry Rob. I just read your question again. My mistake.

    The M50 to M52 port match is perfect with no mismatch at all
     
     

  9.  
    #17
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    Cheers mate, i was kind of hoping they would be terrible (easy improvement and all that), could you PM me a price on an M50 conversion with BBTB keeping the traction control throttle body....

    Thanks

    Rob,
     
     

  10.  
    #18
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    rs250nut's Car Details
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    Just out of intrest what sort of afr's are you seeing when remapping and how many degrees of timing?
     
     

  11.  
    #19
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    TheEnd's Car Details
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    AFR - aim for 12.5 ish on full throttle, and advance can be few degrees on top of stock, the standard stuff swings about depending on rpms and load etc, so it'll vary what you can push it.

    Go too high and you'll set off the knock sensors and get even less power as it'll pull the timing right back.
     
     

  12.  
    #20
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    I wont be mapping the car myself as I dont have the tools or enough experiance with efi tuning just curious. With my old turbocharged project I would aim for afr's in the region of 12.3-12.5 I thought you could get away with being a bit leaner on a n.a application?
     
     

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