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Thread: E67 Saturn Sky Flex Fuel

  1. #1
    Tuner SlvrSky07's Avatar
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    E67 Saturn Sky Flex Fuel

    Hello. I was wondering if and when E67 on the I4s would get the flex fuel support. I have the newest HPT editor, Flex fuel sensor installed to J1 pin 5 and have the power and ground hooked up. I have the sensor enabled under Fuel/Flex fuel. When I use the scanner it has 0Hz so I know its not reading correctly. Is there something I have missed or is it not supported with this ECM and platform?

  2. #2
    Tuner SlvrSky07's Avatar
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    Anyone?

  3. #3
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    Post your tune up and engine config, don't think we're talking LNF here if it's an E67.

    I know the Northstar V8s didn't have all of the FF tables populated in the factory OS, so you can't enable it (haven't dug around hard though). I wonder if the 4cyl OS' are the same or not, I don't imagine so though.

    I downloaded a 07 Sky 2.4 E67 OS12610013 tune and it doesnt have all of the necessary parameters to enable FF (currently just 3). I looked at my factory TrailBlazer SS E67 OS12618164 and it has an additional parameter for sensor type (default is virtual, so bet that's what the Sky OS is using). About 5 more parameters compared to the Sky. Plus it has 2 additional diagnostic parameters under the Fuel System -> Diagnostics area.

    OP, you may need to email support with your stock tune and request these parameters be added.
    Last edited by ScarabEpic22; 04-08-2020 at 06:46 PM.
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  4. #4
    Tuner SlvrSky07's Avatar
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    Nope it’s an LE5 2.4l. I have researched a lot but not coming up with anything really besides V8s. I emailed support but haven’t heard back from them.

  5. #5
    Tuner SlvrSky07's Avatar
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    Thanks to Josh @ hptuners:

    20220 - Flex Fuel Sensor
    330 - Flex Fuel Sensor Diag
    3144 - Flex Fuel Fail%
    4140 - Flex Fuel Diag Delay
    2424 - Power Enrichment Mode Threshold
    2401 - Power Enrichment Ramp Out Rate
    2464 - Power Enrichment Mode Timer

    Are added to the beta.

  6. #6
    Tuner SlvrSky07's Avatar
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    I am still having issues with anything reading on the scanner for the flex fuel freq and ratio. I have loaded the beta, changed it to sensor enabled and sensor type sensor and did a write entire. It should be connected to C1 pin 5 like all the v8s with e67s right?

  7. #7
    Tuner SlvrSky07's Avatar
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    Can anyone confirm that is the correct Ecm pin?

  8. #8
    Tuner SlvrSky07's Avatar
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    From all the research and install videos on other E67 ECMs they all show the top "blue" connector and pin 5. I have installed the pin correctly. I have verified its connection, when using a multi-meter it shows 5v to ground. I have bench tested the flex fuel sensor, it is indeed reading and outputting a signal. I have been working with a couple HPT techs trying to get all the logging protocols working for this platform but nothing seems to be working, it is always showing 0hz or 0% alcohol content. As far as I can tell I may be the first one that is doing this to an E67 with an I4. Has anyone else encountered this issue? Please help!

  9. #9
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    fallowing

  10. #10
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    I wired up a flex sensor on my 2007 G5 LE5 with E67. I can confirm the ecu doesn?t register anything at all on E% or E Freq

  11. #11
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    I would also like some input from the HPT crew. What am I doing wrong? I enabled everything.

  12. #12
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    I checked the pin via volt meter and I am getting an output voltage on the pin we are trying to use and an input.

    Still looking for help