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  1. #1
    Registered
    Join Date
    Jan 2004
    Posts
    9

    Hp500 improvements

    I have a 2002 Donzi 33 zx with a pair of Hp500 Efi's,... looking to maybe putting whipple superchargers on them,... what else can be done to them if you dont want to spend the $$$ for the whipple's????? any ideas??

    thanks

    Arve

  2. #2
    Forum Regulator Sydwayz's Avatar
    My Boats:
    37 Active Thunder, 20 Spectra jet, 17 Speedliner cat outboard
    Join Date
    May 2001
    Location
    Worldwide
    Posts
    18,974

    Re: Hp500 improvements

    Thow out your GPS speedo, and install a pitot tube speedo. You will go at least 10mph faster.
    Brian @ activethunderboats . com

  3. #3
    Rob VIP Member Strip Poker 388's Avatar
    My Boats:
    Hustler 388
    Join Date
    Aug 2001
    Location
    Madison,Mississippi
    Posts
    21,470

    Re: Hp500 improvements

    How many hours on your motors now?

    I just went thru the same thing .The Whipple will cost a little more in the end . Some I have seen did the 540ci kit and some even change to alum heads .I think there only getting 600-630hp

    ck out my engine thread .I am in the middle of it now.

    Hustler 500efi engine tear down & Build Up

    You can do a search on 500efi and there are some other threads on build up also.
    .

    SBC Hydrocephalus


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