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Thread: Has anyone on here converted from MS45.1 to MS43?

  1. #11
    Join Date
    Nov 2014
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    Portland, OR
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    Quote Originally Posted by wertyu78 View Post
    Update: I am currently on the hunt for the items needed to complete this conversion. My goal is to photo document this process. The first step will be to layout the MS43 harness next to the MS45.1 harness for comparison. I've been doing some reading online and have found that there are some folks who have run into issues with the alternator and throttle body connectors being different between the harnesses, while others claim that it is plug n play.
    God speed, I look forward to it!

  2. #12
    I do know for a fact the alternator plug to the voltage regulator is different. You can buy the voltage regulator separate and it fits. I have a brand new ms 43 regulator that I would be willing to sell you.

  3. #13
    Join Date
    Jul 2014
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    903
    This is huge for Hobbits turbo kit he tested on E46F. Hopefully this develops, because I was hoping to go MS43/turbo in a few years
    Modification Thread
    Original Car: Silver Grey on Grey, A/T (1 of 186)
    As it sits: Silver Grey on Black, M/T (1 of 51)
    European Auto Source Tech
    Instagram: @CarbonZHP

  4. #14
    Join Date
    May 2012
    Location
    Northern Michigan
    Posts
    483
    Wouldn't you also need to change the O2 sensors from the wideband LSU 4.2 based sensors in our cars to the narrowband sensors that the MS43 cars have?
    2003 BMW 330i ZHP
    ESS Twin Screw Stage 2 - Wavetrac - Headers - Borla - BMW Performance
    Turner Motorsports - Powerflex - Hawk Performance

    Build thread: http://www.zhpmafia.com/forums/showt...yan-s-2003-ZHP
    Wheelwell: 2003 BMW 3 Series
    Fuelly: 2003 BMW 330i

  5. #15
    Join Date
    May 2012
    Location
    Atlanta, Georgia
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    1,008
    Update:

    I am actively looking for an E53 X5 as a new DD. After three great years of DD use, the ZHP is going to be set aside for fun, finally. It's long overdue for some cosmetic love, as well as some odds & ends, here and there. By implementing a new DD, I'll be able to address all of those items, as well as dive deep into this project.

    Stay tuned.

  6. #16
    Join Date
    Jan 2013
    Location
    Florida
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    223
    Quote Originally Posted by wertyu78 View Post
    Update:

    I am actively looking for an E53 X5 as a new DD. After three great years of DD use, the ZHP is going to be set aside for fun, finally. It's long overdue for some cosmetic love, as well as some odds & ends, here and there. By implementing a new DD, I'll be able to address all of those items, as well as dive deep into this project.

    Stay tuned.
    So I am still curious what is the difference between the 2? What is the advantage of the MS43?

    A quick google search revealed the following for pin outs and work others have done: http://forum.e46fanatics.com/showthread.php?t=929951

  7. #17
    Join Date
    Jul 2014
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    European Auto Source
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    903
    Everything above in the thread. The 45 has not been unlocked and is not tunable. The 43 is

    Sent from my XT1585 using Tapatalk
    Modification Thread
    Original Car: Silver Grey on Grey, A/T (1 of 186)
    As it sits: Silver Grey on Black, M/T (1 of 51)
    European Auto Source Tech
    Instagram: @CarbonZHP

  8. #18
    Join Date
    Jan 2013
    Location
    Florida
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    223
    I have been looking at forced induction and it looks like Nick G was able to tune the MS45: http://www.techniquetuning.com/e46zhpman.html

    "Technique Tuning MS45 ECU Software Programming (no piggyback to install!)"

    Are we talking about the same thing here?

  9. #19
    Join Date
    Jul 2014
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    European Auto Source
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    There's just much less going on with ms45. Everything is all laid out for us with 43

    Sent from my XT1585 using Tapatalk
    Modification Thread
    Original Car: Silver Grey on Grey, A/T (1 of 186)
    As it sits: Silver Grey on Black, M/T (1 of 51)
    European Auto Source Tech
    Instagram: @CarbonZHP

  10. #20
    Join Date
    Jan 2013
    Location
    Florida
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    I hope I am not coming off as being difficult or challenging, I'm really just curious and want to understand.

    I was on e46F and found a thread with a link to this site which appears to offer software to reprogram the ms45.

    http://bmweditor.com/Home/Product

    I don't know anything about what it can or can't do I'm just curious if this makes the 45 any easier?

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