7.4 mpi question
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7.4 mpi question

  1. #1
    Junior Member 98Caliber1's Avatar
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    Default 7.4 mpi question

    Ok I have a 1998 Caliber1 21ft open bow with a mercruiser 7.4 mpi injected hp.

    What are some options I have to get some more power out of it? Right now it does 62-66mph and i just want to crack the 70 mph mark

    some suggestions?
    "Just Another Saturday"

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  3. #2
    cfm
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    Do you have the 385hp MPI ?

    Assuming (you know where assuming usually get's you) you are propped 100% on, you need a good dose of hp to reach your goal. If you want to stay FI then go to a shop like Tyler Crockett's where they have parts combos and their own EFI programming for those combo's.

    For a cheaper way, you can go carbureted and do the norm's - 750-800 Holley, Air Gap intake, camshaft replacement with appropriate hardware including springs, rocker arms, and etc, and exhaust.

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    Junior Member 98Caliber1's Avatar
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    there any benefits to staying fuel injected?
    "Just Another Saturday"

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  6. #4
    cfm
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    Remote start.

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    Senior Member STV_Keith's Avatar
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    Personally I'd rather stay FI than go carb. I know there are several manufacturers that claim their headers pick up some power on those engines. A cam swap would help, but also require a retune or some way to tune the air/fuel ratio.
    Keith-


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    Quote Originally Posted by 98Caliber1 View Post
    there any benefits to staying fuel injected?

    Only if you are leaving it stock.

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