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  1. I just changed base stoich on E39A and it runs...

    I just changed base stoich on E39A and it runs fine with E0 to E40, no codes or problems. EcoBoost uses wideband and speed density, has predictive flex fuel using O2 on flex fuel models, but...
  2. PS flex fuel is different from running an Ethanol...

    PS flex fuel is different from running an Ethanol blend. While it would be nice to have on the E39A, I think my method is working out well. I've been on a cross country road trip with the base stoich...
  3. I think they may have gone to wideband on E39A...

    I think they may have gone to wideband on E39A for 2016 or later, not sure. But if they are wideband you can pretty much go to E50 without changing anything at least on EcoBoost and LNF.
  4. Dunno about your Envision but the narrowband e39A...

    Dunno about your Envision but the narrowband e39A needs the E0 stoich changed in the table otherwise it sets off P0171 with E30. GM didn't even tune it for E10 mandated in most states, where Ford...
  5. Not full E85 but a good mix of it. The proper way...

    Not full E85 but a good mix of it. The proper way in LNF is to adjust injector offset to keep the LTFT close to 0. on my Cobalt SS, I kept injector offset stock and ran up to E30. On my EcoBoosts, I...
  6. Check your primary O2 sensor. If you have more...

    Check your primary O2 sensor. If you have more than 4 pins, it is a wideband and you can basically run E30 to E40 without messing with a sensor. My LNF and all of my Ford's with wideband a can do it....
  7. For the E85 mixing project I had ended up setting...

    For the E85 mixing project I had ended up setting the base stoich to 12.97 to cover E30 and based on my math, should allow LTFT to cover an even wider spreader. From something like E47 down to...
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    I gave it a try on the LNF and it sounds awesome...

    I gave it a try on the LNF and it sounds awesome at first but after awhile it got boring. I'm all about power and MPGs now so shutting of DFCO wasn't doing it any good.
  9. After much experimentation, it looks like the...

    After much experimentation, it looks like the only way to get it to work with E85 blends is by changing the stoich AFR table for the 0% alcohol cell. I also learned that these early LTGs do not have...
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    Just an update: I think I finally figured it out....

    Just an update: I think I finally figured it out. I got VCMSuite ready to go during a warm start and datalogged the exact instance it would occur. It turns out that i set the injector cutoff at too...
  11. Yes, it has the 3 bar settings. I just had to...

    Yes, it has the 3 bar settings. I just had to compare it again with my 09 Stage 1 file. You can opt not to copy the MAP sensor settings and you can run it with your stock MAP sensors...
  12. I believe these were pulled from vehicles that...

    I believe these were pulled from vehicles that had the ECU reflashed with the actual GM tune and not a 3rd party tune.
  13. You're welcome! I saved those Stage tunes all...

    You're welcome! I saved those Stage tunes all these years and it finally paid off. But FYI these are very very mild tunes.
  14. I had to perform some WOT shifting with the...

    I had to perform some WOT shifting with the trans/engine not fully/entirely warmed up yet but it wasn't on purpose. This resulted in nailing the revlimiter after each WOT shift to the point it was...
  15. I figured out why it is throwing P0171, the Ltft...

    I figured out why it is throwing P0171, the Ltft is 33% and stock stoich is 14.64 which is wrong due to the mandated E10 fuel.
  16. Hopefully this helps.

    Hopefully this helps.
  17. E39A ECU. There is an option to enable a sensor....

    E39A ECU. There is an option to enable a sensor. Right now sometimes it will throw P0171 (Bank 1 Lean) but not all the time.
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    Did you just change the first 1 or 2 columns of...

    Did you just change the first 1 or 2 columns of the spark tables to -15 to set the ignition on decel?
  19. Old thread but I found this on a Google search....

    Old thread but I found this on a Google search.
    I can't speak for the newer GM cars, but my 2009 Cobalt SS Turbo LNF runs on a variety of E85 mixtures without changing the injector offset. There's...
  20. Malibu LTZ w/ LTG and E85 kit? Or any LTG with E85 kit?

    Has anyone adapted the ZZP E85 kit for the Malibu with LTG (specifically 2015)? I ran some E85 in the Malibu and got P0171. I didn't realize GM did this differently than Ford, where on my Ford...
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    Speeding up WOT shifts on 6R80 / 6F55?

    I''ve figured out how to make the WOT shifts engage better with less/no noticeable slippage, but I haven't been able to figure out a clear way of speeding up the shifts at WOT.

    During light...
  22. Thread: Flex fuel

    by metroplex
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    I noticed new tables for Flex Fuel popped up for...

    I noticed new tables for Flex Fuel popped up for a "non-Flex" EcoBoost vehicle (that I normally run E30-E47). Can we actually enable FFV operation just like a "Flex Fuel" Ford? Is there any chance we...
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    You will have to adjust the shift schedules. Ford...

    You will have to adjust the shift schedules. Ford did not program the sport mode schedules correctly on the Explorer and PIU.
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    Your Explorer doesn't have much torque, so you...

    Your Explorer doesn't have much torque, so you can try to increase the shift pressure at WOT starting around 200 ft-lb. What you have would work fine with the Explorer Sport or any EcoBoost V6.
  25. Turbo speed is inferred but I found that the...

    Turbo speed is inferred but I found that the efficiency goes downhill above 5200 RPM engine speed or so when you raise the boost.
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