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Thread: Automatic m52b25, worth it tuning ?

  1. #1
    Join Date
    Jul 2016
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    Egypt
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    E36

    Question Automatic m52b25, worth it tuning ?

    hello bimmers, i am riding an e36 323 with auto transmission m52b25 engine, the question is what is the basic upgrades should i install to increase the acceleration of the car ( K&N CAI installed without a obvious changes in acceleration only sound ) need advise and need to know is it worth it tuning it as it is automatic or not. Thank you

  2. #2
    Pelican Parts's Avatar
    Pelican Parts is offline Senior Member Supporting Vendor
    Join Date
    Aug 2013
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    Harbor City, CA
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    '02 E39 Touring
    Hello and welcome to the forum! The 323i wasn't really designed to be tuned, more so an economical driver. My honest opinion would be to save your money and enjoy this car for now. If you really want to personalize it, maybe do some exterior mods; rims, lowering springs, things of that nature. Other members will likely chime in with their opinions as well. Please let us know if you have any further questions or if we can help you with anything.
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  3. #3
    Join Date
    Jul 2016
    Location
    Egypt
    Posts
    30
    My Cars
    E36
    Thank you pelican parts for your reply, i already did some exterior mods and was thinking to do something to increase car's performance, my car is an automatic and i have a 2.93 medium case differential and it is good in the city and perfect on the highway but it doesnt accelerate that much off the line and if i changed it to a medium case 3.91 will it make a difference in power or not ?

  4. #4
    Join Date
    Jul 2004
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    Houston, TX
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    12,462
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    36 Cylinders
    The original differential was 3.91 for the automatic. 2.93 is way too tall for the auto.
    You would feel much more performance with the 3.91, but no difference in power.
    -Abel

    - E36 328is ~210-220whp: Lots of Mods.
    - 2000 Z3: Many Mods.
    - 2003 VW Jetta TDI Manual 47-50mpg
    - 1999 S52 Estoril M Coupe
    - 2014 328d Wagon, self-tuned, 270hp/430ft-lbs
    - 2019 M2 Competition, self-tuned, 504whp
    - 2016 Mini Cooper S

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