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  1. #1

    Custom Fuel injection. 65u GP1200

    HI Guys,

    Well I am building a seadoo SPX with a gp1200 motor and have installed the factory triple pipes, this has taken some time, and now the motor is out (again) I am aware that I need to upgrade the CDI due to the pipes, but I am an electrical engineer, and I am very keen to try port Fuel Injection as this is my hobby, but I am unaware what of ECU system to use, I have been looking at a autronic system and a hall tech system, and using the existing coils and trying to make my own throttle bodies with 1000cc bosch injectors and a bosch fuel pump bit I have also been toying with the idea of using the 1300r system the pump the regulator on so on, I am also un aware of how the injectors should be if I make up my own throttle bodies, if there is a certain angle that they need to be, a how far from the butterfly. So making them without this info is very difficult,
    so any input would be great,

    Regards Brad,


  2. #2
    Flying Scotsman's Avatar
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    I have a MRD fuel inj somewhere in my garage I never did try it out yet but im interested to see whet you do with your set up.I could dig it out and take some pics if you like.

  3. #3
    That would be great. as i know it can be done, i just need some help, and advice, thanks in advance for the photos,
    Regards Brad.

  4. #4
    Flying Scotsman's Avatar
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    Sorry I have not had time to dig through all my stuff yet but I did look through some old threads as I have posted pics in the past.
    I did find this pi that might help.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  5. #5
    Flying Scotsman's Avatar
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    Big Raider had a MRD setup that was similar on his raider he might have some beter advice as he ran his.

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