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  1. #1
    Join Date
    Nov 2005
    Location
    Des Moines, Iowa
    Posts
    75

    Default Supercharging a Moomba

    Looking to supercharge both my 07 and 08 Outbacks. Like to have more power for barefooting. Done the prop route and it helps but still lacking a little when pulling 2 or more footers or if have a few people on the boat. I own a car/boat repair business and we supercharge cars but unable to find anything on supercharging Indmar engines. I think because of reprogramming the powertrain module is the obsticle. Anybody done this before?

  2. #2
    Join Date
    Jul 2002
    Location
    London Ontario Canada
    Posts
    1,851

    Default

    Mastercraft did it to keith st onges boat a few years back, had to add a scoop to the clam shell, but closed the opening off as it was way too noisey. and they use indmar so it must not be too much of a prob
    09 21v LAUNCH

    run your engine after you change your oil
    68 th Member. WS420,HSE Revolution, OJ 466, Acme1157,1100 sacs,Kicker HLCD's n IX500.4, Supra Coolies
    Doug

  3. #3
    Join Date
    Jan 2008
    Location
    Pensacola, FL
    Posts
    1,544

    Default

    So buying a Sanger isn't in the cards?
    1997 MasterCraft 205

    2008 Moomba Outback
    1999 MasterCraft Sportstar OB
    1992 MasterCraft 205
    1999 Malibu Response LX
    1987 Marlin Magnum Skier

  4. #4
    Join Date
    Feb 2009
    Location
    Wausau, WI
    Posts
    436

    Default

    Footer-I kinda looked at some things as well to add top speed to the boat, but have come to the conclusion of its not worth the expense for the average person (me). Don't know what engine you have now, assuming 325, but space is also a concern.

    I asked SC and Indmar if a 6.0L would fit. Their response was; it won't fit under the clam shell and the transmission (one in my boat, 1:1) won't handle the added hp/torque.

    Unless you really gotta have it, it might be best to check out a different boat. I see Lane Bowers is running an outboard. Here is a link to a MC 200 not mine) http://madison.craigslist.org/boa/2138872755.html
    Matt

    2003 Outback, Assault EFI, (6) Polk Audio DB651s, JL Audio M6600 amp, JL Audio M1700 amp, JL Audio 10w6v2 subwoofer

  5. #5
    Join Date
    Jun 2008
    Location
    De Pere WI
    Posts
    4,199

    Default

    wow..
    that's a grip of money for a 1992.
    '06 Supra Launch 20SSV-gone but never forgotten

  6. #6
    Join Date
    Feb 2010
    Location
    Nixa MO
    Posts
    181

    Default

    You should be able to get more performance out of your engine without supercharging it. It is just a basic chevy 350 for the most part. You can change the cam, lifters and rockers and go all roller. You could upgrade to aluminum heads and intake. Your ECU should be able to be reprogrammed by any place that works on Chevy ECUs. Should be easy to get 75-100 horse out of the engine without supercharging.

  7. #7
    Join Date
    Nov 2005
    Location
    Des Moines, Iowa
    Posts
    75

    Default

    Part of my business is reprogramming ECUs on cars. However the ECU is different on the boats. It's an OBD II hook up on autos to reflash. The few supercharging companies I've contacted says that's the obstacle. Last year, Indmar told me they can't do it. I have not contacted them yet to see if they changed their stance.

  8. #8
    Join Date
    Feb 2009
    Location
    Wausau, WI
    Posts
    436

    Default

    Quote Originally Posted by barefooterh2o View Post
    Part of my business is reprogramming ECUs on cars. However the ECU is different on the boats. It's an OBD II hook up on autos to reflash. The few supercharging companies I've contacted says that's the obstacle. Last year, Indmar told me they can't do it. I have not contacted them yet to see if they changed their stance.
    Let us know what you come up with if you do anything. Although there are not many of us but there are a few looking for a few more MPH. Here is a link to a Mastercraft forum thread, similar topic. Enginenut (indmar) comment on there. It is older '07 but should apply to your boats.
    http://www.mastercraft.com/teamtalk/...ad.php?t=15192

    Sandm-same thoughts for a '92 but it is a Mastercraft.
    Matt

    2003 Outback, Assault EFI, (6) Polk Audio DB651s, JL Audio M6600 amp, JL Audio M1700 amp, JL Audio 10w6v2 subwoofer

  9. #9
    Join Date
    Feb 2009
    Location
    Wausau, WI
    Posts
    436

    Default

    Dont know if these would help out
    http://cgi.ebay.com/ebaymotors/INDMA...item25603be4da
    Matt

    2003 Outback, Assault EFI, (6) Polk Audio DB651s, JL Audio M6600 amp, JL Audio M1700 amp, JL Audio 10w6v2 subwoofer

  10. #10
    Join Date
    Nov 2005
    Location
    Des Moines, Iowa
    Posts
    75

    Default

    Thanks for the information. I did get hold of Eric at OJ props and they came out with a replacement of the 13x13 prop with the XMP 3 blade 13x11.5 that should work. I will try that route. However, the lakes are frozen and won't know til spring.

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