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Thread: Eco question

  1. #1

    Default Eco question

    I have a 2003 sea ray sundeck 220. Purchased with a 5.0 vortec efi. It needs a new shortblock. If I go with a 5.7 longblock, will the 5.0 ecm work. I was told I might have to have it reprogrammed.

  2. #2
    Join Date
    Sep 2010
    Jersey Shore

    Default Re: Eco question

    You will definitely have to remap the ecm....
    Dockside Marine Services
    Jersey Shore.
    Mercruiser/Mercury Certified
    Let the insanity begin.

  3. #3

    Default Re: Eco question

    I think these guys do reprogramming for most common ecus https://obd2allinone.com/mefituning.asp

    that would be a good upgrade from a 5.0 to 5.7 you should gain about 40 hp

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