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Stock ECU on a turbo setup?

Discussion in 'ECU's, Electronics, and Tuning' started by elcangripapiex, Sep 12, 2004.

  1. elcangripapiex

    elcangripapiex Member

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    I need to know if I should buy the ls ECU for a turbo setup or buy some other computer to controll the High Vloume fuel rail and reg. with 720cc injectors
     
  2. Slammed90Lude

    Slammed90Lude Senior Member

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    yeah, you keep the stock ECU and then you get hondata, uberdata, or another one of the standalones

    the stock ECU will obviously not run injectors that much larger than stock

    720cc injectors? how much boost are you making
     
  3. hybridalien

    hybridalien Member

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    At how much boost?
    obd1?
    if 10psi or less(obd1 ecu) stock MAP sensor is fine orthewise you will need a aftermarket or a GM one like the 3 Bar.
    Uberdata is free DIY Standalone unit that suport all of those MAP.
    @10 psi: 450cc dsm 2g manual talon/eclipse injectors fit with minors mods to the seals + resistor box from a ef...
     
  4. pissedoffsol

    pissedoffsol RETIRED

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    720's will not be able to be controlled by anything but an add-on standalone like the hondata/.uberdata systems or a full standalone.

    fmus, vafcs, etc won't be able to control that.
     
  5. elcangripapiex

    elcangripapiex Member

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    yea, im thinkin 12-15 psi what add on is best in ur opinion(s)
     
  6. pissedoffsol

    pissedoffsol RETIRED

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    i think, and know, that psi is meaningless for the most part.

    12-15 psi off a dinky turbo = little power gain, little extra fuel required.

    12-15 psi off a huge turbo = huge power gain, huge need for fuel.

    stock honda map is limited to just under 11 psi. you can't go above this without a 3-bar map.
    you can't rnua 3-bar map with out a computer like hon/uber -data to control the new voltage range.
     
  7. Slammed90Lude

    Slammed90Lude Senior Member

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    yup, that pretty much covers it- what turbo do you plan on using?
     
  8. elcangripapiex

    elcangripapiex Member

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    not sure, any ideas? Something good and not to exspensive and worth it!
     
  9. pissedoffsol

    pissedoffsol RETIRED

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    what motor? compression? built?
     
  10. elcangripapiex

    elcangripapiex Member

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    B18A1:
    Block-
    8.5:1 Compression JE Pistons- dont have yet
    .20 Over STD bore- done
    Turbo- dont have yet
    Eagle rods-dont have yet
    Stock crank- got it
    New Oil pump- got it
    New Water pump- got it
    Head-
    New stock valve springs- got it
    After market valves but not sure what kind yet
    Stock cams- got um
    AEM cam gears- got um
    Skunk2 Intake Mani- got it



    And still thinkin.......
     
  11. nfn15037

    nfn15037 Senior Member

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    Just FYI, the ECU can run up to 1000 CC injectors when using CROME or Uberdata. Over 1000cc, the opening time is so slow it is nearly impossible to get the thing to run properly at low RPMs or idle. It iss till tricky to tune large injectors, so beware you will need a bit of dyno time to get it running well. You can run a GM 3 bar map sensor and do anything that Hondata can, while spending a lot less $.
     
  12. drpenguin

    drpenguin Senior Member

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    Correct me if im worng. Once manifold pressure is more then 1lb the ecu generates an error code?
     
  13. pissedoffsol

    pissedoffsol RETIRED

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    yes, it will throw a code, cut timing, and all that.... but its at about 3 psi that this happens.

    1400-1600cc injectors have ideled at 900 rpms with hondata on several street cars that i know of. if you can't idle 1000's with just a hair bump in idel rpm, the tuner is doing something wrong.

    but mind you, you'll blow your unsleeved overbored b18a sky high before you even need something bigger than a 550cc.

    if you havne't gotten the pistons yet, dont. 8.5:1 sucks. get 9-9.5:1 range. you'll make more power, and have better off-boost drivability.
     
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