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  1. #1
    Registered User
    Join Date
    Jul 2010
    Location
    Richmond Va
    Posts
    4

    ? on changing an ecu

    i have a 2005 civic si with header intake and catback exhaust. i know that with those bolt ons ur only gonna get so much gain on a stock ecu. but i was wonderin if i swapped out the stock ecu with one from an rsx if first it would be possible and second if it would give me the added adjustments i needed to get the most performace out of those? see i dont have all the money in the world to blow on a fancy kpro you know? so please any info would be great

  2. #2
    sippin haterade johnkimble's Avatar
    Join Date
    Nov 2003
    Location
    714/949/760
    Posts
    618
    no man, an rsx ecu will not just plug in and get you gains.

    get a hondata reflash http://www.hondata.com/reflash_civicsi.html if you want to improve your ecu without blowing a grand on kpro

  3. #3
    ΜΟΛΩΝ ΛΑΒΕ talonXracer's Avatar
    Join Date
    Apr 2004
    Location
    Catskill Mtns
    Posts
    9,252
    The only way a stock RSX typeS ECU will work in the EP3 is to also drop in the typeS engine and transmission.
    ALL advice issued with this "Disclaimer"
    Tim "the Toolman" Taylor is my HERO ! ! !

    "Labor Unions are Domestic Terrorist orgainizations"

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