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  1. #1

    New 1100 CC LONG nose injectors for Seadoo SD i Control

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ID:	287770Here is what you all been waiting for, new injectors for Seadoo Bosch based Ecus.

    We have tested more or less ALL injectors on the market and these are the only ones that we feel we can recommend to our customers!

    We spend a lot of time with these and the results are fantastic.

    Since we make the programs especially for these there will be no need to fiddle with the fuel pressure and similar.
    (As long as you have stable 58 psi pressure)

    These injectors need our remapping - free for all with maptuners.

    - Long nosed injector that gets the fuel down in the chambers properly.
    - 6 small holes at the end will create a fine "mist"
    - Vtechtuned approved!

    Attachment 287733

    Available now!
    http://www.4-tecperformance.com/inde...oducts_id=2156
    Last edited by VTECH.SE; 11-26-2012 at 07:38 AM.


  2. #2
    boost junkie skidoochris's Avatar
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    "no need for fuel pressure regulators"
    Now how can you say that...
    Even if you meant rrfpr you still need an rrfpr for 22+ psi
    because Bosch says the minimum fuel psi is 37psi
    last, is max flow of 1100 cc at 3 or 4 bar?

  3. #3
    What i mean is that we set up the software for 58 psi fuel pressure that is stock in these skis.
    If you don't have a stable 58 psi then you will need a regulator.

    1100 flow is at 58 psi/4 bar.

  4. #4
    Water4fire's Avatar
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    May I ask, What is the biggest SCer you guys have run with these Injecters and NO regulator? RPM's?
    Thanks

  5. #5
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    I have tested these with ET137 4mm using static 58psi fuel pressure and walbro fuel pump.
    No issues with fueling... VTECH can confirm exact amount, but I vaguely remember it is around 60% max duty cycle @ 14.5psi @ 8660 rpm that I've seen.
    With RRFPR it would be even lower...

    Every hair dresser cuts your hair differently, its the same with tuners... RRFPR can make things easy if you need mechanical control.... I've seen guys running around with RRFPR in their Subaru's and it just makes me cringe... There is no need to add extra stuff if you don't need to... But if you can't tune without it, then install it. VTECH will be releasing a cheap static fuel pressure regulator modification in the future if you need to run higher pressures, but with these injectors, you'd need to be running some serious boost before needing to go over the 58 psi stock.
    If you can do most of the work in the software then kudos to you... Personally I wouldn't start worrying about fuel pressure until IDC is over 80%, even then you can still over run. (Also don't forget about the venturi effect of long nose)


    RRFPR also adds the possibility of user error. Essentially the ECU tuner looses control of the setup and can throw the AFR's right out from what their target was..

    Now back on topic...
    These flow and idle well,
    AFR's are rock solid throughout the time I've been testing...

  6. #6
    mac_man_luke's Avatar
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    Presume they wont work with Siemens ECUs?

    Lolzer: i think the main thing skidoochris was getting at is when you have 22psi boost on top of 58psi fuel pressure you only end up with 36psi relative fuel pressure - aka not enough to atomise properly.

  7. #7
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    Quote Originally Posted by mac_man_luke View Post
    Presume they wont work with Siemens ECUs?

    Lolzer: i think the main thing skidoochris was getting at is when you have 22psi boost on top of 58psi fuel pressure you only end up with 36psi relative fuel pressure - aka not enough to atomise properly.
    Yeah fair enough, I don't know enough about the atomization process... But I have run Siemen's 880 cc injectors on ~26 psi of fuel pressure before, all the way to 7940.

    I think these are 'Bosch ECU only'

  8. #8
    boost junkie skidoochris's Avatar
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    but those are not siemens injectors,
    they look like bosch 38mm ev14 bodies with new style plugs.
    siemens ecu uses the old ev1 style plugs 38mm injectors.
    ev14 are the best injectors on the market.
    Last edited by skidoochris; 11-25-2012 at 06:55 PM.

  9. #9
    so can I use these for my 2012 rxpx?

  10. #10
    Quote Originally Posted by budman5201 View Post
    so can I use these for my 2012 rxpx?
    Yes

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